Exit polling is a popular technique used to determine the outcome of an election prior to results being tallied. Suppose a referendum to increase funding for education is on the ballot in a large town​ (voting population over​ 100,000). An exit poll of 300 voters finds that 144 voted for the referendum. How likely are the results of your sample if the population proportion of voters in the town in favor of the referendum is 0.51​? Based on your​ result, comment on the dangers of using exit polling to call elections

Q: If you want a poll to have a margin of error of 2.84%, how large will your sample have to be?

A:

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2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.