Question: The following table gives the frequency distribution of the number

The following table gives the frequency distribution of the number of hours spent per week on activities that involve sports and/or exercise by a sample of 400 Americans. The numbers are consistent with the summary results from the Bureau of Labor Statistics’ American Time Use Survey (www.bls.gov/tus).
Hours per Week Number of People
0 to less than 3.5............ 34
3.5 to less than 7.0............ 92
7.0 to less than 10.5.......... 55
10.5 to less than 14........... 0 83
14.0 to less than 28.0........... 121
28.0 to less than 56.0........... 15
Find the mean, variance, and standard deviation.


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  • CreatedAugust 25, 2015
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