Waiting time is normally distributed. calculate the value, Ask an Expert

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A store manager claims that the mean amount of time customers spend waiting in line is no more than 4.9 minutes. You believe it exceeds 4.9 minutes and wish to test this claim at the 0.05 level of significance. The mean waiting time for your random sample of 23 customers is 4.3 minutes, with a sample standard deviation of 0.62 minutes. Waiting time is normally distributed. Calculate the value of the test statistic for your random sample rounded to two decimal places?

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Category:- Statistics and Probability
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