In this exercise you will verify that when you have two sets of sample data, the t test for independent samples (assuming equal variances) and the ANOVA method of this section are equivalent. Refer to the data used in Exercises 5-7, but exclude the data on conglomerates.
a. Use a 0.05 level and the method of Section 8-5 to test the claim that wholesale distributors and companies in the food industry have the same revenues.
b. Use a 0.05 level and the ANOVA method of this section to test the claim made in part (a).
c. Verify that the squares of the t test statistic and critical value from part (a) are equal to the F test statistic and critical value from part (b).