The weekly mean sales (in thousands of dollars) of the three local hardware stor

Question

The weekly mean sales (in thousands of dollars) of the three local hardware stores are as shown. Store A: 8.8, 8.3, 9.6, 9.9 Store B: 7.0, 7.9, 5.4, 5.5 Store C: 5.0, 6.2, 4.6, 7.0 Given that the 95% confidence interval using the Tukey procedure for the difference between the mean weekly sales (?A) for Store A and (?B) for Store B is (1.1, 4.3), what can be concluded?

There is enough evidence to support that the mean weekly sales for Store A and Store B are equal.

There is enough evidence to support that the mean weekly sales for Store A and Store B are different.

There is not enough evidence to support that the mean weekly sales for Store A and Store B are equal.

Explanation / Answer

Here, we can be concluded from above-given information,

There is enough evidence to support that the mean weekly sales for store A and Store B are different.

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