A Researcher Conducts a Repeated-Measures Study to Evaluate a Treatment

Multiple Choice

A researcher conducts a repeated-measures study to evaluate a treatment with a sample of n = 16 participants and obtains a t statistic of t = 1.94.The treatment is expected to increase scores and the sample mean shows an increase.Which of the following is the correct decision for a hypothesis test using α = .05?

A) Reject the null hypothesis with a one-tailed test but fail to reject with two tails
B) Reject the null hypothesis with either a one-tailed or a two-tailed test
C) Fail to reject the null hypothesis with either a one-tailed or a two-tailed test
D) Fail to reject the null hypothesis with a one-tailed test but reject with two tails