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In the article "Attitudes About Marijuana and Political Views" (Psychological Reports, 1973), researchers reported on...

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In the article "Attitudes About Marijuana and Political Views" (Psychological Reports, 1973), researchers reported on the use of cannabis by liberals and conservatives during the 1970s. To test the claim (at 1% significance) that the proportion of voters who smoked cannabis frequently was lower among conservatives, the hypotheses were H0: P? - P? = 0 (P? = P?) Ha:P?-P?<0 (P?

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