Question

Q1. If we have a 4 by 7 contingency table, how many degrees of freedom would the test of independence have?

11

18

6

Q2. The Chi-squared test statistic can never be zero.

True

False

Q3. If 25% of the females who smoke develop lung cancer and 20% of the males develop lung cancer, what Is the relative risk for development of lung cancer for females compared to males

500

5

1.25

.8

Answer 1