Carolina, 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 that the sample sizes are not equal.
Store 1
Store 2
Store 3
88
76
85
84
78
67
88
60
58
82
62
93
?
a.Compute the overall mean 
.b.At the 5% level of significance, test to see if there is a significant difference in the average sales of the three stores. Use both the critical value and p-value approaches. Show the ANOVA table.
What will be an ideal response?
a. 76.75b.
| Source of Variation | SS | df | MS | F | p-value | F critical |
| Between Groups | 902.25 | 2 | 451.13 | 5.72 | 0.025 | 4.26 |
| Within Groups | 710 | 9 | 78.89 | |||
| Total | 1612.25 | 11 |
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