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Estimate the mean amount as well as obtain the bound for the estimate.

A definite firm specializing in the manufacture and sale of leisure clothing has 80 retail stores in Florida and 140 in California. With each state as a stratum the firm wishes to estimate average sick-leave time per employee for the past year. Each channel can be viewed as a cluster of employees, and total sick leave time for each store can be determined from records. Simple arbitrary samples of 8 stores from Florida and 10 from California gave the results shown in the table below (mi - # of employees, yi - total days sick leave for the i-th store).

Evaluation the average amount of sick leave per employee and obtain the bound for the estimate.

Florida

California

mi

yi

mi

yi

16

40

16

50

20

51

8

32

8

30

4

11

12

36

5

10

22

68

12

32

15

50

17

37

11

39

22

61

7

23

30

39

 

 

24

40

 

 

10

41

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M923308

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