The reserve capacities (in hours) of 18 randomly selected automotive batteries have a sample standard deviation of

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The reserve capacities (in hours) of 18 randomly selected automotive batteries have a sample standard deviation of 0.25 hour. Use an 80% level of confidence.

Assume the sample is from a normally distributed population and construct the indicated confidence intervals for

(a) The population variance σ² and

(b) the population standard deviation σ. Interpret the results.

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Elementary Statistics Picturing The World

ISBN: 9780134683416

7th Edition

Authors: Ron Larson, Betsy Farber

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Question Posted: May 15, 2019 11:50 AM

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The reserve capacities (in hours) of 18 randomly selected automotive batteries have a sample standard deviation of

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a b With 80 confidence you can say that ...View the full answer

Elementary Statistics Picturing The World

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