The annual earnings of 14 randomly selected computer software engineers have a sample standard deviation of $3725.
Question:
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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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
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Related Book For
Elementary Statistics Picturing The World
ISBN: 9780321911216
6th Edition
Authors: Ron Larson, Betsy Farber
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