The amount of time a bank teller spends with each customer has a population mean of LI
Question:
a. What is the probability that the mean time spent per customer is at least 3 minutes?
b. There is an 85% chance that the sample mean is less than how many minutes?
c. What assumption must you make in order to solve (a) and (b)?
d. If you select a random sample of 64 customers, there is an 85% chance that the sample mean is less than how many minutes?
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Ali Khawaja
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Related Book For 
Statistics For Managers Using Microsoft Excel
ISBN: 772
7th Edition
Authors: David M. Levine, David F. Stephan, Kathryn A. Szabat
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