CONTINGENCY TABLES

7. Phi Delta Kappa (PDK) is an international professional organization for educators that, in collaboration with Gallup. has been conducting polls on the public's attitudes toward the public schools since 1969. The following was one of the questions on the most recent poll conducted June 4-13, 2011: "Most teachers in the nation now belong to unions or associations that bargain over salaries, working conditions, and the like. Has unionization, in your opinion, helped, hurt, or made no difference in the quality of public school education in the United States?" The respondents' answers broken down by party affiliation is shown below: n t Helped 35 Made no difference Don't knoerefused L 247 972 .ma -- -z_ Calculate the conditional distribution of opinion on unions given political affiliation. Round to 3 decimal places if necessary. difference Don't knowfrefused What is the percent of people who thought unions hurt given they were Republican? Write as a percent rounded to 1 decimal place, do not write the 96. % What is the percent of people who thought unions hurt given they were Democrat? Write as a percent rounded to 1 decimal place, do not write the 96. $6 What is the percent of people who thought unions hurt given they were Independent? Write as a percent rounded to 1 decimal place, do not write the %. %