Hemoglobin levels (g/100ml) were measured on 10 men and 10 women. Determine if there is a difference in the mean hemoglobin levels between the genders.

Men	Women
13.7	12.5
11.8	10.9
13.5	10.2
14.6	13.1
11.9	13.7
13.6	11.9
14.7	12.1
11.4	12.8
13.4	12.4
14.2	14.5

1. What statistical test will you use and why?
2. What is your computed answer?
3. What probability level should you use and why?
4. What is your degrees of freedom?
5. Will you reject or fail to reject the null hypothesis? Why?
6. What would be the best way to answer if you were writing it for a journal article?
7. What does your answer tell you about the relationship of gender to hemoglobin levels? Be specific.
8. If you made an error, was it Type I or Type II? Explain why.