A health expert evaluates the sleeping patterns of adults. Each week she randomly selects 40 adults and
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A health expert evaluates the sleeping patterns of adults. Each week she randomly selects 40 adults and calculates their average sleep time. Over many weeks, she finds that 5% of average sleep time is less than 6 hours and 5% of average sleep time is more than 6.4 hours. What are the mean and standard deviation (in hours) of sleep time for the population?
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Related Book For
Business Statistics Communicating With Numbers
ISBN: 9781260716306
4th Edition
Authors: Sanjiv Jaggia, Alison Kelly
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