Exit-poll predictions According to an exit poll in the 2008 Vermont gubernatorial election, 54.5% of the sample size of 837 reported voting for the Republican candidate Douglas. Is this enough evidence to predict who won? Test that the population proportion who voted for Douglas was 0.50 against the alternative that it differed from 0.50. Answer by: a. Identifying the variable and parameter, and defining notation. b. Stating hypotheses and checking assumptions for a large-sample test. c. Reporting the P-value and interpreting it. (The test statistic equals 2.662.) d. Explaining how to make a decision for the significance level of 0.05.
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