The manager of a grocery store has taken a random sample of 36 customers. The average length of time it took the customers in the sample to check out was 4.2 minutes. The population standard deviation is known to be 0.4 minute. We want to test to determine whether or not the mean waiting time of all customers is significantly more than 4 minutes. Refer to Exhibit 9-22. At a .05 level of significance, it can be concluded that the mean of the population is significantly greater than 4.2 significantly greater than 4 not significantly greater than 4 significantly less than 4
The manager of a grocery store has taken a random sample of 36 customers. The average length of time it took the customers in the sample to check out was 4.2 minutes. The population standard deviation is known to be 0.4 minute. We want to test to determine whether or not the mean waiting time of all customers is significantly more than 4 minutes. Refer to Exhibit 9-22. At a .05 level of significance, it can be concluded that the mean of the population is significantly greater than 4.2 significantly greater than 4 not significantly greater than 4 significantly less than 4
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 26PFA
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