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In: Statistics and Probability

The manager of a grocery store has taken a random sample of 100 customers. The average...

The manager of a grocery store has taken a random sample of 100 customers. The average length of time it took the customers in the sample to check out was 4.8 minutes with a sample standard deviation of 0.5 minutes. Conduct a test to determine whether or not the mean waiting time of all customers is significantly more than 5 minutes. Use a significance level of α = 0.01.

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Expert Solution

Let denotes the mean waiting time of all customers.

orchestra answered 1 year ago
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