4.1 Introducing Hypothesis Tests Suppose that we wish to compare methods of influencing voters to support a particular candidate. We are specifically interested in testing whether an ad on the Internet is more effective than a text message on the phone. Suppose also that our random sample consists of only 400 voters, with 200 chosen at random to get the text message on the phone and the rest getting the ad in the Internet. Display in a two-way table the possible sample results for which the outcome is not clear: there is some evidence in the sample that the ad on the Internet is more effective but it is possibly only due to random chance and likely not strong enough to generalize to the population. O Will Vote Will Not Vote for the Candidate for the Candidate Internet 100 100 Message 100 100 O Will Vote Will Not Vote for the Candidate for the Candidate Internet 100 100 Message 105 95