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A bank manager would like the know the mean wait time for his customers. He randomly...

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Statistics

A bank manager would like the know the mean wait time for hiscustomers. He randomly selects 25 customers and record the amountof time wait to see a teller. The sample mean is 7.25 minutes witha standard deviation of 1.1 minutes. Construct a 99% confidenceinterval for the mean wait time. Round your answers to 2decimal places.

Lower Limit =

Upper Limit =

Write a summary sentence for the confidence interval youcalculated

Answer & Explanation Solved by verified expert
3.6 Ratings (653 Votes)
Given that 725s 11n 25Degrees of freedom df n 1 25 1 24At 99    See Answer
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