Mathematics, 13.11.2019 03:31 JUSTDAN6929
The manager of a grocery store has taken a random sample of 40 customers. the average length of time it took the customers in the sample to check out was 3.1 minutes with a variance of 0.55 minutes. we want to test to determine whether or not the mean waiting time of all customers is significantly more than 3 minutes.
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The manager of a grocery store has taken a random sample of 40 customers. the average length of time...
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