The winning times (in hours) for a sample of 30 randomly selected Boston Marathon Womens Open Division champions are shown in the table at the left (a) Find the point estimate of the population mean (b) Find the margin of error for a 95 confidence level (c) Construct a 95 confidence interval for th...

a 2598 b 0123 c 2475 2721 With 95 ...

The winning times (in hours) for a sample of 30 randomly selected Boston Marathon Womens Open Division

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The winning times (in hours) for a sample of 30 randomly selected Boston Marathon Women’s Open Division champions are shown in the table at the left.

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(a) Find the point estimate of the population mean.

(b) Find the margin of error for a 95% confidence level.

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

Interpret the results.

(d) Does it seem possible that the population mean could be greater than 2.75 hours? Explain.

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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 winning times (in hours) for a sample of 30 randomly selected Boston Marathon Womens Open Division

Question:

Women's Open Division winning times (in hours) 3.36 3.45 3.50 3.14 2.79 2.79 2.75 2.59 2.45 2.38 2.57 2.42 2.41 2.42 2.41 2.42 2.45 2.44 2.39 2.44 2.40 2.35 2.41 2.39 2.49 2.42 2.54 2.44 2.44 2.49

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Elementary Statistics Picturing The World

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