The annual earnings of 14 randomly selected computer software engineers have a sample standard deviation of $3725.

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The annual earnings of 14 randomly selected computer software engineers have a sample standard deviation of $3725. 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

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

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Elementary Statistics Picturing The World

ISBN: 9780321911216

6th Edition

Authors: Ron Larson, Betsy Farber

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Question Posted: Nov 24, 2015 07:53 AM

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The annual earnings of 14 randomly selected computer software engineers have a sample standard deviation of $3725.

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a n 1s 2 X R 2 n 1s 2 X L 2 13 3725 2 19812 13 3725 2 7042 910...View the full answer

Elementary Statistics Picturing The World

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