An owner of a chain of supermarkets claims that there is greater price competition among supermarkets than among small "convenience" food stores. A sample of ground beef prices in 13 supermarkets and 10 convenience stores gives standard deviations of $\$ 0.15$ and $\$ 0.10$, respectively. Evaluate the claim at the $10 \%$ significance level.

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The Answer of An owner of a chain of supermarkets claims that there is greater price competition among supermarkets than among small "convenience" food stores. A sample of ground beef prices in 13 supermarkets and 10 convenience stores gives standard deviations of $\$ 0.15$ and $\$ 0.10$, respectively. Evaluate the claim at the $10 \%$ significance level.

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