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$\begin{array}{ccccc}\hline \text { Month } & {\text { Weekly Sales }} \\\hline \text { June } & 980 & 1096 & 1103 & 869 \\\text { July } & 1061 & 1042 & 929 & 1014 \\\text { August } & 1060 & 1176 & 1447 & 1130 \\\text { September } & 1018 & 872 & 986 & 1103 \\\hline\end{array}$

Can you conclude that the weekly sales varies with the month? Use the $\alpha = 0.05$ level of significance.

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