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 3.1 minutes with a standard deviation of 0.5 minutes. we want to test to determine whether or not the mean waiting time of all customers is significantly more than 3 minutes. the test statistic is 2. what is the p-value? round your answer to three decimal places.
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The manager of a grocery store has taken a random sample of 100 customers. the average length of tim...
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