Shortly before a gubernatorial election, a poll asks a random sample of 50 potential voters the following questions:

Party: Do you consider yourself to be a Democrat (D), a Republican (R), or an Independent (I)?

Vote: If you were to vote today, would you vote for the Democratic candidate (D) or the Republican (R) candidate, or would you be undecided (U) about how to vote?

Plan: Do you plan on voting in the election? Yes (Y) or no (N)?

For each person interviewed, the answers to the three questions are entered in a data file, which is the Voting data file at the text website. Using software, create a data file and conduct the following analyses:

(a) Construct the 3 × 3 contingency table relating party affiliation to intended vote. Report the conditional distributions on intended vote for each of the three party affiliations.

Are they very different?

(b) Report the result of the test of the hypothesis that intended vote is independent of party affiliation. Provide the test statistic and the P-value, and interpret the result.

(c) Supplement the analyses in

(a) and

(b) to investigate the association more fully. Interpret.