Question: The weights in ounces of four types of women’s shoes are shown here. At

α = 0.05 test the claim that there is no difference in the mean weights of the groups.

Dress Heals Dress Flats Casual Heels Casual flats

8 6 11 6

7 6 12 9

7 7 12 7

6

1 x = 7 2 x = 6.3 3 x = 11.7 4 x = 7.3

s1 = .82 s2 = .58 s3 = .58 s4 = 1.53