The results of a recent poll on the preference of voters regarding the presidential candidates are shown below. Candidate A Candidate B Voters Surveyed 200 300 Voters Favoring This Candidate 150 195 (a) Formulate the null and alternative hypotheses to test whether there is a difference between the proportions of voters favoring each candidate. (b) Compute the test statistic. (c) Using the critical approach, what is your conclusion? Let a (d) Using the p-value approach, what is your conclusion? Let a .05. .05.