Question

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. Select one answer. 1o points To test the claim (at 1% significance) that the proportion of voters who smoked cannabis frequently was lower among conservatives, the hypotheses were Ho:P P2 0 (P1=P2) (P1<P2) HaiP-P2<0 In this hypothesis test which of the following errors is a Type II error? A. O We conclude that a smaller proportion of conservatives smoke cannabis, in comparison to liberals, when there is actually no difference. B.OWe conclude that there is no difference between the proportions of conservatives and liberals that smoke cannabis, when the proportion is actually lower for conservatives.

Answer 1

Retaining the null hypothesis H, when inf act it is false is known as type II error. Answer :B