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Question: please show all your work write equations clearly plug in...

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Please show all your work, write equations clearly, plug in values properly, and comment on all steps.

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 400A The numbers are consistent with the summary results from the Bureau of Labor Statistics American Time Use Survey (www.bls.gov). mericans. Hours per Week Number of People 0 to less than 3.5 36 3.5 to less than 7.0 7.0 to less than 10.5 10.5 to less than 14.0 14.0 to less than 28.0 28.0 to less than 56.0 90 54 84 119 17 Find the mean, variance, and standard deviation. out all calculations exactly, round to 2 decimal places the final answers where it is necessary Mean - hours Variance hours2 Standard deviation hours

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