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t the retailer's claim? Select the correct choice below, and fll in the a wer limit of seconds and the upper limit of seconds for the n

t the retailer's claim? Select the correct choice below, and fll in the a wer limit of seconds and the upper limit of seconds for the n

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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Suppose a retailer claims that the average wait time for a customer on its support line is 183 seconds. A random sample of 53 customers had an average wait time of 173 seconds. Assume the population standard deviation for wait time is 55 seconds. Using a 95% confidence interval, does this sample support the retailer's claim? ... Using a 95% confidence interval, does this sample support the retailer's claim? Select the correct choice below, and fill in the answer boxes to complete your choice. (Round to two decimal places as needed.) O A. Yes, because the retailer's claim is between the lower limit of seconds and the upper limit of seconds for the mean wait time. O B. No, because the retailer's claim is not between the lower limit of seconds and the upper limit of seconds for the mean wait time.
Transcribed Image Text:Suppose a retailer claims that the average wait time for a customer on its support line is 183 seconds. A random sample of 53 customers had an average wait time of 173 seconds. Assume the population standard deviation for wait time is 55 seconds. Using a 95% confidence interval, does this sample support the retailer's claim? ... Using a 95% confidence interval, does this sample support the retailer's claim? Select the correct choice below, and fill in the answer boxes to complete your choice. (Round to two decimal places as needed.) O A. Yes, because the retailer's claim is between the lower limit of seconds and the upper limit of seconds for the mean wait time. O B. No, because the retailer's claim is not between the lower limit of seconds and the upper limit of seconds for the mean wait time.
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