A linear regression equation has b = 3 and a = - 6. What is the predicted value of Y for X = 4?
A) = 6
B) = -21
C) = -2
D) This cannot be determined without additional information.
Question 2
A researcher conducts a hypothesis test to evaluate the effect of a treatment that is expected to increase scores. The hypothesis test produces a z-score of z = 2.37. If the researcher is using a one-tailed test, what is the correct statistical decision?
A) Reject the null hypothesis with = .05 but not with = .01.
B) Reject the null hypothesis with either = .05 or = .01.
C) Fail to reject the null hypothesis with either = .05 or = .01.
D) This cannot be answered without additional information.
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