Suppose you are the owner of a chain of pizza restaurants. You believe that the

Question

Suppose you are the owner of a chain of pizza restaurants. You believe that the manager at the has a very irregular performance. You gather monthly data on profits for the Champaign branch of your restaurant (measured in dollars and cents). Given this information, which of the following tests would be most appropriate to use to test whether the volatility in profits for the Champaign branch is more than $20,000? Champaign branch O An independent samples t-test for difference in means (equal variances) O A t-test for the mean O Az-test for population proportion O Az-test for the difference in means O An F-test for difference in variances O An F-test for difference in means O A z-test for the mean O An independent samples t-test for difference in means (unequal variances) O Az-test for difference in proportions O A paired sample t-test for difference in means O A chi-squared test for variance

Explanation / Answer

Here we need to compare population variance to the sample variance. That is we need single sample chi square test.

Hence, correct option is chi square test of variance.

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