Question
A national television network took an exit poll of 1490 voters after each had cast a vote in a state gubernatorial election. Of them, 690
A national television network took an exit poll of 1490 voters after each had cast a vote in a state gubernatorial election. Of them, 690 said they voted for the Democratic candidate and 800 said they voted for the Republican candidate. Treating the sample as a random sample from the population of all voters, a 95% confidence interval for the proportion of all voters voting for the Republican candidate was (0.512, 0.562). Suppose the same proportions resulted from n=149 (instead of 1490), with counts of 69 and 80, and that there are only two candidates. Complete parts a and b below.
a. Does a 95% interval using the smaller sample size allow you to predict the winner? Explain.
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