Politicians are interested in knowing the opinions of their constituents on important issues. One administrative assistant to a senator claims that more than 63% of adult women favor stricter gun laws. A recent telephone survey of 1026 adults by IBR Polls found that 65.9% of adult women favored stricter gun laws. Test the claim that significantly more than 63% of adult women favor stricter gun laws.
Is this test one-tailed or two-tailed?
A) one-tailed right
B) two-tailed
C) one-tailed left
Is the answer B?
Yes, the test is a one-tailed right test.
In hypothesis testing, a one-tailed test is used when the hypothesis being tested is directional, meaning we are specifically interested in whether the proportion is either significantly greater or significantly less than a certain value.
In this case, the claim is that "more than 63% of adult women favor stricter gun laws," which suggests a direction of "greater than." Therefore, we will conduct a one-tailed test to determine whether the proportion of adult women favoring stricter gun laws is significantly greater than 63%. The correct answer is A) one-tailed right.