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d deviation of 0.9 minute. Complete parts (a) and (b) below The test statistic is (Round to two decimal places as needed.) Find the p-value p-value- (Round to three decimal places as needed) State the conclusion TT et a random sample of 81 orders. The sample mean waiting Ho. There is evidence to conclude that the population mean waiting time is different from 3.8 minutes b. Because the sample size is 81, do you need to be concerned about the shape of the population distribution when conducting the t test in (a)? Explain Choose the correct answer below OA. Yes, because n is equal to 81, the sampling distribution of the t test cannot be determined. In general, the t test requires a larger sample size OB. No, because n is equal to 81, the sampling distribution of the t test is approximately normal. In general, the t test is appropriate for this sample size unless the population is skewed OC. Yes, because n is equal to 81, the sampling distribution of the I tost cannot be determined. In general, the t test is only appropriate for a normally distributed sample OD. No, because n is equal to 81, the sampling distribution of the t test is approximately normal. In general, the t test is appropriate for a large sample size

d deviation of 0.9 minute. Complete parts (a) and (b) below The test statistic is (Round to two decimal places as needed.) Find the p-value p-value- (Round to three decimal places as needed) State the conclusion TT et a random sample of 81 orders. The sample mean waiting Ho. There is evidence to conclude that the population mean waiting time is different from 3.8 minutes b. Because the sample size is 81, do you need to be concerned about the shape of the population distribution when conducting the t test in (a)? Explain Choose the correct answer below OA. Yes, because n is equal to 81, the sampling distribution of the t test cannot be determined. In general, the t test requires a larger sample size OB. No, because n is equal to 81, the sampling distribution of the t test is approximately normal. In general, the t test is appropriate for this sample size unless the population is skewed OC. Yes, because n is equal to 81, the sampling distribution of the I tost cannot be determined. In general, the t test is only appropriate for a normally distributed sample OD. No, because n is equal to 81, the sampling distribution of the t test is approximately normal. In general, the t test is appropriate for a large sample size

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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You are the manager of a restaurant for a fast-food franchise. Last month, the mean waiting time at the drive-through window for branches in your geographical region, as measured from the time a customer places an order until the time the customer receives the order, was 3.8 minutes. You select a random sample of 81 orders. The sample mean waiting time 4.03 minutes, with a sample standard deviation of 0.9 minute. Complete parts (a) and (b) below. The test statistic is (Round to two decimal places as needed.) Find the p-value p-value- (Round to three decimal places as needed) State the conclusion CITS Submit tes Ho. There is evidence to conclude that the population mean waiting time is different from 3.8 minutes. b. Because the sample size is 81, do you need to be concerned about the shape of the population distribution when conducting the t test in (a)? Explain. Choose the correct answer below OA. Yes, because n is equal to 81, the sampling distribution of the t test cannot be determined. In general, the t test requires a larger sample size OB. No, because n is equal to 81, the sampling distribution of the t test is approximately normal. In general, the t test is appropriate for this sample size unless the population is skewed OC. Yes, because n is equal to 81, the sampling distribution of the t test cannot be determined. In general, the t test is only appropriate for a normally distributed sample OD. No, because n is equal to 81, the sampling distribution of the t test is approximately normal. In general, the t test is appropriate for a large sample size.
Transcribed Image Text:You are the manager of a restaurant for a fast-food franchise. Last month, the mean waiting time at the drive-through window for branches in your geographical region, as measured from the time a customer places an order until the time the customer receives the order, was 3.8 minutes. You select a random sample of 81 orders. The sample mean waiting time 4.03 minutes, with a sample standard deviation of 0.9 minute. Complete parts (a) and (b) below. The test statistic is (Round to two decimal places as needed.) Find the p-value p-value- (Round to three decimal places as needed) State the conclusion CITS Submit tes Ho. There is evidence to conclude that the population mean waiting time is different from 3.8 minutes. b. Because the sample size is 81, do you need to be concerned about the shape of the population distribution when conducting the t test in (a)? Explain. Choose the correct answer below OA. Yes, because n is equal to 81, the sampling distribution of the t test cannot be determined. In general, the t test requires a larger sample size OB. No, because n is equal to 81, the sampling distribution of the t test is approximately normal. In general, the t test is appropriate for this sample size unless the population is skewed OC. Yes, because n is equal to 81, the sampling distribution of the t test cannot be determined. In general, the t test is only appropriate for a normally distributed sample OD. No, because n is equal to 81, the sampling distribution of the t test is approximately normal. In general, the t test is appropriate for a large sample size.
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