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

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

7.5 2.0 12.1 8.8 9.4 7.3 1.9 2.8 7.0 7.3

(a) Find the sample mean and the sample standard deviation.

(b) Construct a 90% confidence interval for the population mean. Interpret the results. Assume the times are normally distributed.

(c) Repeat part (b), assuming σ = 3.5 minutes. Compare the results.

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Elementary Statistics Picturing The World

ISBN: 9781292260464

7th Global Edition

Authors: Betsy Farber, Ron Larson

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Question Posted: Apr 29, 2024 05:01 AM

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

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a x 661 338 b 465 857 With 90 confidence you can say that t...View the full answer

Elementary Statistics Picturing The World

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