Older people often have a hard time finding work. AARP reported on the number of weeks it takes a worker aged 55 plus to find a job. The population standard deviation is unknown. Refer to the data stored in JobSearch.xlsx posted on Blackboard. (a) Develop a 90% confidence interval estimate of the mean number of weeks it takes a worked aged 55 plus to find a job. (b) Develop a 95% confidence interval estimate of the mean number of weeks it takes a worked aged 55 plus to find a job. (c) Develop a 99% confidence interval estimate of the mean number of weeks it takes a worked aged 55 plus to find a job.

Data

Job Search Time (Weeks)

21

14

51

16

17

14

16

12

48

0

27

17

32

24

12

10

52

21

26

14

13

24

19

28

26

26

10

21

44

36

22

39

17

17

10

19

16

22

5

22