Nancy, Inc. has three stores located in three different areas. Random samples of the sales of the three stores (in $1000) are shown below. Please note the sample sizes are not equal. Store 1 Store 2 Store 3 46 34 33 47 36 31 45 35 35 42 39   45     ​ a. Compute the overall mean b. At a 5% level of significance, test to see if there is a significant difference in the average sales of the three stores.

Question

Nancy, Inc. has three stores located in three different areas. Random samples of the sales of the three stores (in $1000) are shown below. Please note the sample sizes are not equal.

Store 1

Store 2

Store 3

46

34

33

47

36

31

45

35

35

42

39

 

45

 

 

a. Compute the overall mean
b. At a 5% level of significance, test to see if there is a significant difference in the average sales of the three stores.

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