In: Statistics and Probability
A two-tailed hypothesis test is being used to evaluate a treatment effect with α = 0.05. If the sample data produce a z-score of z = -2.0, then what is the correct decision?
A.Reject the null hypothesis and conclude that the treatment has no effect |
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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 |