Show your work.

7. A local radio station provides morning drive-time news.They also encourage listeners to weigh in on topics.This morning the question was: how many hours do children under 12 years of age watch TV per day. Five callers responded that their children watched the following number of hours of TV last night.Remember to compute the variance and standard deviation based upon asmallsample.

Caller

TV Hours

1

3.0

2

3.5

3

4.0

4

4.5

5

3.0

a) What is the mean?

b) What is the standard deviation? [Remember: this is a small sample.]

c) What is the range of hours of TV watched?