In: Statistics and Probability
The following contingency table shows opinion about global warming (nonissue vs. serious concern) among registered voters, broken down by political party affiliation (Democratic, Republican, and Independent). Use the table to answer a) through d) below.
Political Party Opinions on Global Warming Nonissue Serious Concern
Total
Democratic 70 430 500
Republican 290 210 500
Independent 70 130 200
Total 430 770 1200
a) What is the probability that a registered voter selected at random believes that global warming is a serious issue?