13. Inference review, problem 13 Suppose you are the manager of a chain of pizza

Question

13. Inference review, problem 13 Suppose you are the manager of a chain of pizza restaurants. You want to test whether there is any significant difference in profits among your six restaurants in Illinois. You gather data on monthly profits (measured in dollars and cents) for the past two years for each store. Given this information, which of the following tests would be most appropriate to use? O A z-test for the mean A chi-squared test for variance O An F-test for difference in means 0 A z-test for the difference in means An independent samples t-test for difference in means (equal variances) O A z-test for difference in proportions A paired sample t-test for difference in means An independent samples t-test for difference in means (unequal variances) O A t-test for the mean 0 A z-test for population proportion O An F-test for difference in variances

Explanation / Answer

Here we need to compare the means of more than two populations (six resturants). Hence, we will use F - test for difference in means.

Option 3 is correct.

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