Question 1:

Test the claim that the samples come from populations with the same mean. Assume that the populations are normally distributed with the same variance.

Given the sample data below, test the claim that the populations have the same mean. Use a significance level of 0.05.

Brand A Brand B Brand C

n = 10 n = 10 n = 10

x-bar = 32.4 x-bar = 32.0 x-bar = 27.2

s2 = 4.12 s2 = 3.06 s2 = 4.88

Find the test statistic F. Use three decimal places.

Question 2

Test the claim that the samples come from populations with the same mean. Assume that the populations are normally distributed with the same variance.

Given the sample data below, test the claim that the populations have the same mean. Use a significance level of 0.05.

Brand A Brand B Brand C

n = 10 n = 10 n = 10

x-bar = 32.4 x-bar = 32.0 x-bar = 27.2

s2 = 4.12 s2 = 3.06 s2 = 4.88

Find the

**critical value F**. Use two decimal places.

I'm lost. I know that the test statistic for a One-Way ANOVA is: F = variance between samples/variance within samples. However, I don't understand the formulas. Please advise