In a right-tailed test comparing two proportions, the test statistic was z_calc = +1.81. The p-value is: A).9649 B).0351 C).4649 D)Must know n to answer.

Question

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Since the test is right-tailed, we need to find the area to the right of the test statistic. Using a standard normal table or calculator, we find that the area to the right of 1.81 is 0.0351. This is the p-value, so the answer is B. We do not need to know the sample size (n) to calculate the p-value in a hypothesis test for proportions.

In a Right-Tailed Test Comparing Two Proportions, the Test Statistic