Question: Consider a study investigating whether a recorded phone call is more effective than a flyer in persuading voters to vote for a particular candidate. The
Consider a study investigating whether a recorded phone call is more effective than a flyer in persuading voters to vote for a particular candidate. The response variable is the proportion of voters planning to vote for the candidate, with ???????? and ???????? representing the proportions for the two methods (receiving a phone call and receiving a flyer, respectively.) The sample statistic of interest is ???????????????? . We are testing ????0 : ????????=???????? vs ???????? : ????????>???????? . A randomization distribution of differences in proportion, ???????????????? , for this test is shown in the figure below. Interpret the p-value 0.002 in terms of the probability of the results happening by random chance. The corresponding statistic value is 0.55
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