**Question: **Complete the following:

a. Select a variable. Compare the mean of the variable for a sample of 30 for one group with the mean of the variable for a sample of 30 for a second group. Use a *z* test.

b. Select a variable. Compare the mean of the variable for a sample of 10 for one group with the mean of the variable for a sample of 10 for a second group. Use a *t *test.

c. Select a variable that will enable you to compare proportions of two groups. Use sample sizes of at least 30. Use the *z *test for proportions.

**Solution:**The solution consists of 618 words (7 pages)

**Deliverables:**Word Document