The costs of political campaigns have increased significantly over the years

What is stated by the null hypothesis for the chi-square test for contingency tables?

a. there is a relationship between the two categorical variables b. there is no relationship between the two categorical variables c. both variables have the same frequency distribution d. the two variables have different frequency distributions

Texas corporations __________.

A. can give campaign contribution directly to candidates B. can only give campaign contributions to judicial candidates C. cannot spend money on politics D. can give money to PACs for political purposes