A Two-Tailed Hypothesis Test Is Being Used to Evaluate a Treatment

question 56

Multiple Choice

A two-tailed hypothesis test is being used to evaluate a treatment effect with ? = .05.If the sample data produce a z-score of z = -2.24, then what is the correct decision?

• A)Reject the null hypothesis and conclude that the treatment has no effect.
• B)Reject the null hypothesis and conclude that the treatment has an effect.
• C)Fail to reject the null hypothesis and conclude that the treatment has no effect.
• D)Fail to reject the null hypothesis and conclude that the treatment has an effect.