A One-Tailed Sign Test Is Used to Test for Differences

Multiple Choice

A one-tailed sign test is used to test for differences between two populations at the 0.10 level of significance. There were 9 pluses and 5 minuses. What is the decision regarding the null hypothesis?

A) Fail to reject the null hypothesis.
B) Reject the null hypothesis.
C) Neither reject nor fail to reject the null hypothesis.
D) Should have used a paired t-test.