Sentences were chosen at random from Fritjof Capra's book The Tao of Physics. The number of words in the sentences were counted. This is the result.

4

5

16

11

7

22

23

22

18

14

23

12

20

18

18

22

10

23

20

21

22

16

16

11

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.