A new beta-blocker medication is being tested to treat high blood pressure. Subjects with high blood pressure volunteered to take part in the experiment. 160 subjects were randomly assigned to receive a placebo and 220 received the medicine. High blood pressure disappeared in 90 of the controls and in 135 of the treatment group. Test the claim that the new beta-blocker medicine is effective at a significance level of αα = 0.01.   Based on the hypotheses, find the following: Test Statistic =  p-value =

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2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.