Create a linked list structure Music that contains the data fields Name, Artist, Number_of _Songs, and a pointer to the list. Create the structure with 3 members and fill in data for each member. Create a function that will display() all the data for each member and call it from the main program.
A+ Work
PR 7-3A Weighted average cost method with perpetual inventory (Page 349 of Accounting 25e Warren-Reeve-Duchac)
The beginning inventory for RTE Office Supplies and data on purchases and sales for a three-month period are shown in Problem 7-1A.
Instructions
1. Record the inventory, purchases, and cost of merchandise sold data in a perpetual inventory record similar to the one illustrated in Exhibit 5, using the weighted average cost method.
2. Determine the total sales, the total cost of merchandise sold, and the gross profit from
sales for the period.
3. Determine the ending inventory cost as of August 31, 2014.
(Should be Gross Profit $193,100)
PR 8.3A Bank Reconcilliation and entries (Page 395 of Accounting 25e Warren-Reeve-Duchac)
The cash account for Remedy Medical Co. at April 30, 2014, indicated a balance of $18,885.
The bank statement indicated a balance of $23,775 on April 30, 2014. Comparing the bank
statement and the accompanying canceled checks and memos with the records revealed the following reconciling items:
a. Checks outstanding totaled $7,840.
b. A deposit of $3,580, representing receipts of April 30, had been made too late to appear on the bank statement.
c. The bank collected $3,780 on a note left for collection. The face of note was $3,600.
d. A check for $770 returned with the statement had been incorrectly recorded by Remedy Medical Co. as $700. The check was for the payment of an obligation to Copelin Co. for a purchase on account.
e. A check drawn for $330 had been erroneously charged by the bank as $3,300.
f. Bank service charges for April amounted to $110.
Instructions
1. Prepare a bank reconciliation.
2. Journalize the necessary entries. The accounts have not been closed.
3. If a balance sheet were prepared for Remedy Medical Co. on April 30, 2014, what amount should be reported as cash?
The beginning inventory for RTE Office Supplies and data on purchases and sales for a three-month period are shown in Problem 7-1A.
Instructions
1. Record the inventory, purchases, and cost of merchandise sold data in a perpetual inventory record similar to the one illustrated in Exhibit 5, using the weighted average cost method.
2. Determine the total sales, the total cost of merchandise sold, and the gross profit from
sales for the period.
3. Determine the ending inventory cost as of August 31, 2014.
(Should be Gross Profit $193,100)
PR 8.3A Bank Reconcilliation and entries (Page 395 of Accounting 25e Warren-Reeve-Duchac)
The cash account for Remedy Medical Co. at April 30, 2014, indicated a balance of $18,885.
The bank statement indicated a balance of $23,775 on April 30, 2014. Comparing the bank
statement and the accompanying canceled checks and memos with the records revealed the following reconciling items:
a. Checks outstanding totaled $7,840.
b. A deposit of $3,580, representing receipts of April 30, had been made too late to appear on the bank statement.
c. The bank collected $3,780 on a note left for collection. The face of note was $3,600.
d. A check for $770 returned with the statement had been incorrectly recorded by Remedy Medical Co. as $700. The check was for the payment of an obligation to Copelin Co. for a purchase on account.
e. A check drawn for $330 had been erroneously charged by the bank as $3,300.
f. Bank service charges for April amounted to $110.
Instructions
1. Prepare a bank reconciliation.
2. Journalize the necessary entries. The accounts have not been closed.
3. If a balance sheet were prepared for Remedy Medical Co. on April 30, 2014, what amount should be reported as cash?
(Adjusted balance: $22,485)
A+ Answers
Goal: Construct a case study/research paper that examines a firm in the U.S. from a microeconomic standpoint and provide suggestions based on your findings.
Step 1: Choose a firm for your focus. In addition to picking a firm that you find interesting, you will likely want to pick a firm that has available data (or a firm that for which you can personally provide data). Publicly traded companies file reports with a great deal of data (preferred).
NOTE: Be sure to break your paper into the following sections with headings:
What does your firm do? Introduce your firm (Sunday)
How have supply and demand conditions impacted the firm in recent years? (Sunday)
Examine price elasticity of demand for the products your firm sells. (Sunday)
A+ Work
The production department of the newspaper wants to ensure that the mean blackness of the print for all newspapers is at least 0.97 on a standard scale in which the target value is 1.0. A random sample of 50 newspapers was selected, and the blackness of on spot of each of the 50 newspapers measured. Calculate the sample statistics and determine whether there is evidence that the population mean blackness is less than 0.97.
The marketing department team was charged with improving the telemarketing process in order to increase the number of home-delivery subscriptions sold. It is known that the longer a caller speaks to a respondent, the greater the chance that the caller will sell a home-delivery subscription. Therefore, the team decided to find ways to increase the length of the call. The team investigated the impact that the time of a call might have on the length. The team selected a sample of 30 female callers and randomly assigned 15 of to the “early” time period (5-7pm) and 15 to the “later” (7-9pm) time period. The callers knew that the team was observing their efforts that evening but didn’t know which particular calls were monitored. Measurements were taken on the length of call (defined as the difference, in seconds, between the time the person answers the phone and the time she hangs up). A. Analyze the data and compare the two independent groups of callers. B. Suppose that instead of the research design described, there were only 15 callers sampled and each caller was to be monitored twice in the evening – once in the early time period and once in the later time period. Thus, each of the pairs of values represents a particular caller’s two measurements. Re-analyzed the data. How does it compare to part A.
In studying the home delivery solicitation process, the marketing department team determined that the so-called “later” calls made between 7pm and 9pm were significantly more conducive to lengthier calls than those made earlier in the evening (between 5-7pm). The team sought to investigate the effect of the type of presentation on the length of the call. A group of 24 female callers was randomly assigned, 8 each, to one of three presentation plans – structured, semi-structured, and unstructured – and trained to make the telephone presentation. All calls were made between 7-9pm and the callers were to provide an introductory greeting that was personal but informal (“Hi, this is Leigh Richardson from the XYZ Times. May I speak to John Smith?”). The callers knew that the team was observing their efforts that evening but didn’t know which particular calls were monitored. Measurements were taken on the length of call (defined as the difference, in seconds, between the time the person answers the phone and the time he or she hangs up). Analyze the data and compare the three independent groups of callers.
A+ Work
Show the step by step solutions to the following questions:
A firm is able to sell 10,000 units at $ 12 per piece. The company fixed cost is $30,000. Variable cost is $6 per unit.
What is the contribution per unit?
What is the breakeven sales in $? What is the breakeven sale in units?
What is the markup on sales price? What is the mark up on total cost?
They raise the price to $15 and demand drops to 8000.
4. Calculate the price elasticity.
5. What is the n e w markup (profit margin %) on the sales price ($15)? What is the new mark up ( profit margin %) on total cost?
6. Please calculate the total profit for this company as well as the profit per each toy sold. Are they better off raising the price?
2. A firm is able to sell 10,000 units. The company fixed cost is $10,000. Variable cost is $6 per unit. Contribution margin (CM) is $4.
1. What is the markup (profit margin %) on sales price? What is the mark up on total cost (profit margin %)?
2. If the price elasticity of demand is 2, how many units they can sell if they drop the SP by $2.
3. What is the new markup on sales price? What is the new mark up on total cost? (Hint: use the new sales)
4. Please calculate the total profit for this company as well as the profit per each toy sold (Hint: use the new demand)
3. A company manufacturing toys has a fixed cost of $100,000. Variable cost is $6 per toy. Selling price is $10 per toy. Company target profit is $120,000.
How many toys should be sold to reach the target profit?
The company found that its variable cost is going to increase by $2 and plans to raise its selling price by $3 and reduced the fixed costs by $20,000. How many more(less) toys have to be sold at the new price to reach the target profit of $120,000?
What is the markup (profit margin %) on sales price at this new sales volume? What is the markup (profit margin %) on total cost?
Sam is developing a business plan for starting Pizza business in Waltham. Sam specializes in pepperoni pizza. Based on the secondary data he has found out that there are 20,000 families in the area and about 20% of these families are strict vegetarians. He believes that he can get 10% of the market share of the potential customers. His research reveals an average family consumes 10 pizzas per year.
It costs a total of $ 6 to make a Pepperoni pizza. Sam is planning to introduce his Pepperoni pizza at $ 8 and raise the price by $2 in the second year. Price elasticity of demand for pizza is 0.50
1. Estimate the demand for Sam’s pizza in the first year
2. Calculate the % markup (profit margin %) on sales price and total cost in the first year
b. Estimate the demand for Pizza in the second year with the new price.
d. Calculate the % mark up on sales price and total cost in the second year
5. NE is planning to replace the central A/C system for the class rooms. In response to their request for proposal, NEU received two proposals. The details of the proposal are given below.
Company A Company C
A/C system cost including installation $ 35,000 45,000
Life in years 10 10
Insurance per year $ 900 1,200
Electricity charge per month $ 800 450
Maintenance charges per quarter $ 350 300
System Overhaul - number per year 4 3 in two years
Material Cost per overhaul $ 1,000 400
Numberoflabor hoursperoverhaul 8 3
Labor rate for overhaul $/hour 100 100
Use life cycle costs to recommend a system for NEU. Show the calculations to support your recommendations.
A+ Answers
Question 1 of 40
At one school, the mean amount of time that tenth-graders spend watching television each week is 18.4 hours. The principal introduces a campaign to encourage the students to watch less television. One year later, the principal wants to perform a hypothesis test to determine whether the average amount of time spent watching television per week has decreased.
Formulate the null and alternative hypotheses for the study described.
A.
Ho: µ = 18.4 hours H : µ 18.4 hours
B.
Ho: µ = 18.4 hours H : µ < 18.4 hours
C.
Ho: µ 18.4 hours H : µ < 18.4 hours
D.
Ho: µ = 18.4 hours H : µ > 18.4 hours
Question 3 of 40
The owner of a football team claims that the average attendance at home games is over 3000, and he is therefore justified in moving the team to a city with a larger stadium. Assuming that a hypothesis test of the claim has been conducted and that the conclusion is failure to reject the null hypothesis, state the conclusion in non-technical terms.
A. There is sufficient evidence to support the claim that the mean attendance is greater than 3000.
B. There is sufficient evidence to support the claim that the mean attendance is equal to 3000.
C. There is not sufficient evidence to support the claim that the mean attendance is greater than 3000.
D. There is not sufficient evidence to support the claim that the mean attendance is less than 3000.
Question 6 of 40
In 1990, the average duration of long-distance telephone calls originating in one town was 9.4 minutes. A long-distance telephone company wants to perform a hypothesis test to determine whether the average duration of long-distance phone calls has changed from the 1990 mean of 9.4 minutes. The mean duration for a random sample of 50 calls originating in the town was 8.6 minutes. Does the data provide sufficient evidence to conclude that the mean call duration, µ, is different from the 1990 mean of 9.4 minutes? Perform the appropriate hypothesis test using a significance level of 0.01. Assume that = 4.8 minutes.
A. With a z of -1.2 there is sufficient evidence to conclude that the mean
value has changed from the 1990 mean of 9.4 minutes.
B. With a P-value of 0.2302 there is not sufficient evidence to conclude
that the mean value is less than the 1990 mean of 9.4 minutes.
C. With a P-value of 0.2302 there is sufficient evidence to conclude that
the mean value is less than the 1990 mean of 9.4 minutes.
D. With a z of –1.2 there is not sufficient evidence to conclude that the
mean value has changed from the 1990 mean of 9.4 minutes.
Question 7 of 40
A supplier of DVDs claims that no more than 1% of the DVDs are defective. In a random sample of 600 DVDs, it is found that 3% are defective, but the supplier claims that this is only a sample fluctuation. At the 0.01 level of significance, test the supplier’s claim that no more than 1% are defective.
A. Do not reject the null hypothesis and conclude that there is evidence to support the claim that more than 1% of the DVDs are defective.
B. Reject the null hypothesis and conclude that there is insufficient evidence to support the claim that more than 1% of the DVDs are defective.
C. Do not reject the null hypothesis and conclude that there is insufficient evidence to support the claim that more than 1% of the DVDs are defective.
D. Reject the null hypothesis and conclude that there is sufficient evidence to support the claim that more than 1% of the DVDs are defective.
Question 8 of 40
If a fan purchased a bag with 30 peanuts, what is the lowest level at which this would be a significant event?
A. 0.05
B. 0.025
C. 0.01
D. It is not significant at any of the levels given
Question 11 of 40
A consumer advocacy group claims that the mean amount of juice in a 16
ounce bottled drink is not 16 ounces, as stated by the bottler.
Determine the null and alternative hypotheses for the test described.
A.
H0: µ = 16 ounces Ha: µ < 16 ounces
B.
H0: µ 16 ounces Ha: µ = 16 ounces
C.
H0: µ = 16 ounces Ha: µ > 16 ounces
D.
H0: µ = 16 ounces Ha: µ 16 ounces
Question 12 of 40
A poll of 1,068 adult Americans reveals that 52% of the voters surveyed prefer the Democratic candidate for the presidency. At the 0.05 significance level, test the claim that more than half of all voters prefer the Democrat.
A. Reject the null hypothesis. Conclude that there is insufficient evidence that more than half of all voters prefer Democrats.
B. Do not reject the null hypothesis. Conclude that there is sufficient evidence that more than half of all voters prefer Democrats.
C. Reject the null hypothesis. Conclude that there is sufficient evidence that more than half of all voters prefer Democrats.
D. Do not reject the null hypothesis. Conclude that there is insufficient evidence that more than half of all voters prefer Democrats.
Question 13 of 40
A consumer group claims that the mean running time for a certain type of flashlight battery is not the same as the manufacturer’s claims. Determine the null and alternative hypotheses for the test described.
A.
H0: µ = Manufacturer’s claims Ha: µ < Manufacturer’s claims
B.
H0: µ = Manufacturer’s claims Ha: µ Manufacturer’s claims
C.
H0: µ = Manufacturer’s claims Ha: µ > Manufacturer’s claims
D.
H0: µ Manufacturer’s claims Ha: µ = Manufacturer’s claims
Question 14 of 40
A researcher wants to check the claim that convicted burglars spend an average of 18.7 months in jail. She takes a random sample of 35 such cases from court files and finds that months. Assume that the population standard deviation is 7 months. Test the null hypothesis that µ = 18.7 at the 0.05 significance level.
A.
Do not reject the null hypothesis and conclude that the claim that the mean is different from 18.7 months is supported.
B.
Do not reject the null hypothesis and conclude that the claim that the mean is different from 18.7 months cannot be supported.
C.
Reject the null hypothesis and conclude that the claim that the mean is different from 18.7 months is supported.
D.
Reject the null hypothesis and conclude that the claim that the mean is different from 18.7 months cannot be supported.
Question 15 of 40
The owner of a football team claims that the average attendance at home games is over 4000, and he is therefore justified in moving the team to a city with a larger stadium. Assume that a hypothesis test of the claim has been conducted and that the conclusion of the test was to reject the null hypothesis. Identify the population to which the results of the test apply.
A. All games played by the team in question in which the attendance is over 4000
B. All future home games to be played by the team in question
C. All home games played by the team in question
D. None of the populations given are appropriate
Question 16 of 40
A long-distance telephone company claims that the mean duration of long-distance telephone calls originating in one town was greater than 9.4 minutes, which is the average for the state. Determine the conclusion of the hypothesis test assuming that the results of the sampling do not lead to rejection of the null hypothesis.
A. Conclusion: Support the claim that the mean is less than 9.4 minutes.
B. Conclusion: Support the claim that the mean is greater than 9.4 minutes.
C. Conclusion: Support the claim that the mean is equal to 9.4 minutes.
D. Conclusion: Do not support the claim that the mean is greater than 9.4 minutes.
Question 18 of 40
A two-tailed test is conducted at the 5% significance level. What is the P-value required to reject the null hypothesis?
A. Greater than or equal to 0.10
B. Less than or equal to 0.05
C. Less than or equal to 0.10
D. Greater than or equal to 0.05
Question 19 of 40
A consumer advocacy group claims that the mean amount of juice in a 16 ounce bottled drink is not 16 ounces, as stated by the bottler. Determine the conclusion of the hypothesis test assuming that the results of the sampling lead to rejection of the null hypothesis.
A. Conclusion: Support the claim that the mean is equal to 16 ounces.
B. Conclusion: Support the claim that the mean is greater than 16 ounces.
C. Conclusion: Support the claim that the mean is not equal to 16 ounces.
D. Conclusion: Support the claim that the mean is less than 16 ounces.
Question 20 of 40
A psychologist claims that more than 19 percent of the population suffers from professional problems due to extreme shyness. Assume that a hypothesis test of the claim has been conducted and that the conclusion of the test was to reject the null hypothesis. Identify the population to which the results of the test apply.
A. The population is all shy workers.
B. The population cannot be identified from the description of the study.
C. The population is all American workers.
D. The population is all American professional workers (doctors, lawyers, CPA’s, and the like..
Question 21 of 40
One hundred people are selected at random and tested for colorblindness to determine whether gender and colorblindness are independent. The following counts were observed.
Colorblind Not Colorblind Total
Male 7 53 60
Female 1 39 40
Total 8 92 100
If gender and colorblindness are independent, find the expected values corresponding to the male combinations of gender and colorblindness.
A. Colorblind Male 4.8; Not Colorblind Male 55.2
B. Colorblind Male 6.8; Not Colorblind Male 53.2
C. Colorblind Male 4.8; Not Colorblind Male 55.4
D. Colorblind Male 4.8; Not Colorblind Male 56.2
Question 22 of 40
One hundred people are selected at random and tested for colorblindness to determine whether gender and colorblindness are independent. The following counts were observed.
Colorblind Not Colorblind Total
Male 8 52 60
Female 2 38 40
Total 10 90 100
State the null and alternative hypothesis for the test associated with this data.
A.
H0: Colorblindness and gender are dependent characteristics.
Ha: Colorblindness and gender are not related in any way.
B.
H0: Colorblindness and gender are dependent characteristics.
Ha: Colorblindness and gender are related in some way.
C.
H0: Colorblindness and gender are independent characteristics.
Ha: Colorblindness and gender are not related in any way.
D.
H0: Colorblindness and gender are independent characteristics.
Ha: Colorblindness and gender are related in some way.
Question 23 of 40
A golfer wished to find a ball that would travel more than 170 yards when hit with his 6-iron with a club head speed of 90 miles per hour. He had a golf equipment lab test a low compression ball by having a robot swing his club 12 times at the required speed. State the null and alternative hypotheses for this test.
A.
H0: µ > 170; Ha: µ = 170
B.
H0: µ < 170; Ha: µ = 170
C.
H0: µ = 170; Ha: µ > 170
D.
Question 24 of 40
One hundred people are selected at random and tested for colorblindness to determine whether gender and colorblindness are independent. The following counts were observed.
Colorblind Not Colorblind Total
Male 7 53 60
Female 1 39 40
Total 8 92 100
If gender and colorblindness are independent, find the expected values corresponding to the female combinations of gender and colorblindness.
A. Colorblind Female 4.8; Not Colorblind Female 55.2
B. Colorblind Female 3.2; Not Colorblind Female 36.8
C. Colorblind Female 4.8; Not Colorblind Female 35.2
D. Colorblind Female 3.8; Not Colorblind Female 36.2
Question 25 of 40
One hundred people are selected at random and tested for colorblindness to determine whether gender and colorblindness are independent. The following counts were observed.
Colorblind Not Colorblind Total
Male 7 53 60
Female 1 39 40
Total 8 92 100
State the null and alternative hypothesis for the information above.
A.
H0: Colorblindness and gender are dependent characteristics.
Ha: Colorblindness and gender are related in some way.
B.
H0: Colorblindness and gender are independent characteristics.
Ha: Colorblindness and gender are not related in any way.
C.
H0: Colorblindness and gender are dependent characteristics.
Ha: Colorblindness and gender are not related in any way.
D.
H0: Colorblindness and gender are independent characteristics.
Ha: Colorblindness and gender are related in some way.
Question 26 of 40
A 95% confidence interval for the mean of a normal population is found to be 13.2 < µ < 22.4. What is the margin of error?
A. 4.6
B. 4.4
C. 4.2
D. 5.6
Question 27 of 40
The margin of error in estimating the population mean of a normal population is E = 9.3 when the sample size is 15. If the sample size had been 18 and the sample standard deviation did not change, would the margin of error be larger or smaller than 9.3? Explain your answer.
A. Smaller. E decreases as the square root of the sample size gets larger.
B. Smaller. E increases as the square root of the sample size gets larger.
C. Larger. E decreases as the square root of the sample size gets larger.
D. Larger. E increases as the square root of the sample size gets larger.
Question 28 of 40
A 95% confidence interval for the mean of a normal population is found to be 15.6 < µ < 25.2. What is the margin of error?
A. 3.9
B. 4.8
C. 4.9
D. 3.7
Question 29 of 40
Which of the following statements is true?
A. The p distribution cannot be used when finding a confidence interval for the population mean with a small sample anytime the population standard deviation is unknown.
B. The t distribution can be used when finding a confidence interval for the population mean with a small sample anytime the population standard deviation is unknown.
C. The t distribution cannot be used when finding a confidence interval for the population mean with a small sample anytime the population standard deviation is unknown.
D. The p distribution can be used when finding a confidence interval for the population mean with a small sample anytime the population standard deviation is unknown.
Question 30 of 40
Which of the following statements is true?
A.
The t distribution can be used when finding a confidence interval for the population mean whenever the sample size is small.
B. The p distribution can be used when finding a confidence interval for the population mean whenever the sample size is small.
C. The t distribution cannot be used when finding a confidence interval for the population mean whenever the sample size is small.
D. The p distribution cannot be used when finding a confidence interval for the sample mean whenever the sample size is small.
Question 31 of 40
The following data were analyzed using one-way analysis of variance.
A B C
34 27 19
26 23 31
31 29 22
28 21 22
Which one of the following statements is correct?
A.
The purpose of the analysis is to determine whether the groups A, B, and C are independent.
B. The purpose of the analysis is to test the hypothesis that the population means of the three groups are equal.
C. The purpose of the analysis is to test the hypothesis that the population variances of the three groups are equal.
D. The purpose of the analysis is to test the hypothesis that the sample means of the three groups are equal.
Question 32 of 40
One hundred people are selected at random and tested for colorblindness to determine whether gender and colorblindness are independent. The following counts were observed.
Colorblind Not Colorblind Total
Male 8 52 60
Female 2 38 40
Total 10 90 100
If gender and colorblindness are independent, find the expected values corresponding to the four combinations of gender and colorblindness, and enter them in the following table along with row and column totals.
Colorblind Not Colorblind Total
Male
Female
Total
A. Male Colorblind 6.0; Male Not Colorblind 54.0
B. Male Colorblind 7.0; Male Not Colorblind 53.0
C. Male Colorblind 8.0; Male Not Colorblind 52.0
D. Male Colorblind 6.0; Male Not Colorblind 53.0
Question 33 of 40
A large test statistic F tells us that the sample means __________ the data within the individual samples, which would be unlikely if the populations means really were equal (as the null hypothesis claims).
A. differ more than
B. differ less than
C. are equal to
D. do not vary with
Question 34 of 40
One hundred people are selected at random and tested for colorblindness to determine whether gender and colorblindness are independent.
The critical value of X2 for a 2 x 2 table using a 0.05 significance level is 3.841. If the value of the X2 statistic is 4.613, state your conclusion about the relationship between gender and colorblindness.
A.
Reject H0. There is not sufficient evidence to support the claim that gender and colorblindness are related.
B.
Reject H0. There is sufficient evidence to support the claim that gender and colorblindness are related.
C.
Do not Reject H0. There is sufficient evidence to support the claim that gender and colorblindness are related.
D.
Do not Reject H0. There is not sufficient evidence to support the claim that gender and colorblindness are related.
Question 35 of 40
A simple random sample from a normal distribution is taken in order to obtain a 95% confidence interval for the population mean. If the sample size is 8, the sample mean x̄ is 22, and the sample standard deviation s is 6.3, what is the margin of error? Show your answer to 2 decimal places.
A. df = 7; E = 3.3445.38 = 5.6566
B. df = 8; E = 3.3445.38 = 5.6566
C. df = 6; E = 2.3656.38 = 5.769
D. df = 7; E = 2.3656.38 = 5.869
Question 36 of 40
One hundred people are selected at random and tested for colorblindness to determine whether gender and colorblindness are independent.
The critical value of X2 for a 2 x 2 table using a 0.05 significance level is 3.841. If the value of the X2 statistic is 3.427, state your conclusion about the relationship between gender and colorblindness.
A.
Do not reject H0. There is not sufficient evidence to support the claim that gender and colorblindness are related.
B.
Do not reject H0. There is sufficient evidence to support the claim that gender and colorblindness are related.
C.
Reject H0. There is not sufficient evidence to support the claim that gender and colorblindness are related.
D.
Reject H0. There is sufficient evidence to support the claim that gender and colorblindness are related.
A golfer wished to find a ball that would travel more than 170 yards when hit with his 6-iron with a club head speed of 90 miles per hour. He had a golf equipment lab test a low compression ball by having a robot swing his club 12 times at the required speed.
Data from this test had a sample mean of 171.6 yards with a sample standard deviation of 2.4 yards. Assuming normality, carry out a hypothesis test at the 0.05 significance level to determine whether the ball meets the golfer’s requirements. Use the partial t-table below.
Area in one tail
0.025 0.05
Area in two tails
Degrees of
Freedom
n - 1 0.05 0.10
6 2.447 1.943
7 2.365 1.895
8 2.306 1.860
9 2.262 1.833
A.
Accept the null hypothesis. The data do not provide sufficient evidence that the average distance is greater than 170 yards.
B. Accept the null hypothesis. The data do provide sufficient evidence that the average distance is greater than 170 yards.
C. Reject the null hypothesis. The data do not provide sufficient evidence that the average distance is greater than 170 yards.
D. Reject the null hypothesis. The data do provide sufficient evidence that the average distance is greater than 170 yards.
Question 38 of 40
A 95% confidence interval for the mean of a normal population is found to be 17.6 < µ < 23.6. What is the margin of error?
A. 2.0
B. 2.7
C. 3.0
D. 4.0
Question 39 of 40
The following data were analyzed using one-way analysis of variance.
A B C
34 27 19
26 23 21
31 29 22
28 21 12
Which one of the following statements is correct?
A. The purpose of the analysis is to determine whether the groups A, B, and C are independent.
B. The purpose of the analysis is to test the hypothesis that the population means of the three groups are equal.
C. The purpose of the analysis is to test the hypothesis that the population variances of the three groups are equal.
D. The purpose of the analysis is to test the hypothesis that the sample means of the three groups are equal.
Question 40 of 40
The margin of error in estimating the population mean of a normal population is E = 9.3 when the sample size is 15. If the sample size had been 25 and the sample standard deviation did not change, would the margin of error be larger or smaller than 9.3?
A. Smaller. E increases as the square root of the sample size gets larger.
B. Smaller. E decreases as the square root of the sample size gets larger.
C. Larger. E decreases as the square root of the sample size gets larger.
D. Larger. E increases as the square root of the sample size gets larger.