An Owner of a Chain of Supermarkets Claims That There $\$ 0.15$

Essay

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.