MNM, Inc Has Three Stores Located in Three Different Areas

Essay

MNM, Inc. has three stores located in three different areas. Random samples of the daily sales of the three stores (in $1,000s) are shown below. $$\begin{array} { c c c } \text { Store 1 } & \text { Store 2 } & \text { Store 3 } \\9 & 10 & 6 \\8 & 11 & 7 \\7 & 10 & 8 \\8 & 13 & 11\end{array}$$ 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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