Question

Sales data on three independent departments are summarized and presented in the table below. Department X...

Sales data on three independent departments are summarized and presented in the table below.

Department X

Department Y

Department Z

16

21

21

18

17

19

22

21

20

23

24

21

22

23

19

20

22

24

30

29

27

28

29

27

28

32

30

Do these data provide sufficient evidence to indicate a statistical difference in sales? Assume the level of significance is 5%. Show all the steps in hypothesis testing and all your calculations.

Math   Statistics-And-Probability   
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