Sentences were chosen at random from Homer's book The Iliad. The number of words in the sentences were counted. This is the result.

20

6

6

14

8

12

23

15

11

18

15

15

21

16

11

10

17

11

10

10

17

4

5

21

Problem:

Use the data above to: a) determine the mean and sample standard deviation, b) calculate a 95% margin of error, c) determine the respective confidence interval.