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.

19

19

4

23

6

14

5

4

8

9

9

10

12

18

12

7

8

16

3

18

13

3

23

3

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.