pter TO Assignment Commercial A Commercial B Number Who Saw Commercial 150 200 Number Who Recalled Message 63 60 Use a = .05 and test the hypothesis that there is no difference in the recall proportions for the two commercials. Formulate the null and the alternative hypotheses. Ho : p1 - P2 equal to 0 Ha : P1 - P2 not equal to 0 What is the value of the test statistic (to 2 decimals)? 76.91 What is the p-value (to 4 decimals)? 12.03 Does there appear to be a difference in recall proportions for the two commercials? Yes Compute a 95% confidence interval for the difference between the recall proportions for the two populations (to 4 decimals). .0040 .221