Refer to the data set in Exercise. Assume the population of times spent checking email is normally

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Refer to the data set in Exercise. Assume the population of times spent checking email is normally distributed.

(a) Construct a 95% confidence interval for the population variance.

(b) Construct a 95% confidence interval for the population standard deviation. Interpret the results.

Exercise.

The data set represents the amounts of time (in minutes) spent checking email for a random sample of employees at a company.

Related Book For answer-question

Essentials of Statistics for Business and Economics

ISBN: 978-1305081598

7th edition

Authors: David Anderson, Thomas Williams, Dennis Sweeney, Jeffrey Cam

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Posted Date: Dec 17, 2018 12:58 AM

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Refer to the data set in Exercise. Assume the population of times spent checking email is normally

Question:

7.5 2.0 12.1 8.8 9.4 7.3 1.9 2.8 7.0 7.3 7.5 2.0 12.1 8.8 9.4 7.3 1.9 2.8 7.0 7.3

Expert Answer:

The 95 confidence interval for the population variance is calculated as follows Confidence interval estimate for a population standard deviation is ex... View the full answer

Essentials of Statistics for Business and Economics

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