Question: A sample of 100 students was asked how many hours per week they spent studying. The following frequency table shows the results: a. Approximate the

A sample of 100 students was asked how many hours per week they spent studying. The following frequency table shows the results: Number of Hours Frequency 1.0-4.9 5.0-8.9 14 34 9.0-12.9 29 13.0-16.9 15

a. Approximate the mean time this sample of students spent studying.

b. Approximate the standard deviation of the time this sample of students spent studying.

Number of Hours Frequency 1.0-4.9 5.0-8.9 14 34 9.0-12.9 29 13.0-16.9 15 17.0-20.9 8

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