The amount of time a bank teller spends with each customer has a population mean, =
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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Related Book For
Basic Business Statistics Concepts And Applications
ISBN: 9780132168380
12th Edition
Authors: Mark L. Berenson, David M. Levine, Timothy C. Krehbiel
Question Posted:
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