Question

suppose we want to test the claim that the majority of adults are in favor of raising the voting age to 21. is the hypothesis test left - tailed, right - tailed, or two - tailed?
a. right - tailed
b. left - tailed
c. two - tailed

Explanation:

Let \(p\) be the proportion of adults in favor of raising the voting age to 21. The claim is that the majority are in favor, so \(p>0.5\). In hypothesis testing, if the alternative hypothesis is \(H_1: p > p_0\) (where \(p_0 = 0.5\) here), it is a right - tailed test.

Answer:

A. Right - tailed