Question

We want to compare the mean weight of an all meat diet to the mean weight of an all spam diet. We believe the mean weights are not the same for these two diets. We randomly assign subjects to one of two groups, an all meat diet group and an all spam diet group. The all meat groups consist of 50 people who have a mean weight of 180 and a standard deviation of 20. The spam group also has 50 people with a mean weight of 175 and a standard deviation of 20.

Let μ₁ be the mean weight for the all meat diet and μ₂ be the mean weight for the all spam diet. Write out your hypotheses and perform a significance test.

Answer 1