If the population standard deviation of the lifetime of washing machines is estimated to be 900 hours

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If the population standard deviation of the lifetime of washing machines is estimated to be 900 hours how large a sample must be taken in order to be 97% confident that the margin of error will not exceed 100 hours?

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Elementary Statistics Picturing the World

ISBN: 978-0321911216

6th edition

Authors: Ron Larson, Betsy Farber

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Posted Date: Apr 21, 2020 08:04 AM

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If the population standard deviation of the lifetime of washing machines is estimated to be 900 hours

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900 hours z value for 99... View the full answer

Elementary Statistics Picturing the World

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