Author Question: A multiple regression equation is computed for a sample of n = 20 sets of X1, X2, and Y scores. If ... (Read 80 times)

lbcchick · **on:** Jun 20, 2018

A multiple regression equation is computed for a sample of n = 20 sets of X1, X2, and Y scores. If the significance of the regression equation is evaluated using an F-ratio, then the ratio would have degrees of freedom equal to ____.

A) df = 1, 18
B) df = 1, 19
C) df = 2, 17
D) df = 2, 18

Question 2

A researcher administers a treatment to a sample of participants selected from a population with = 80. If a hypothesis test is used to evaluate the effect of the treatment, which combination of factors is most likely to result in rejecting the null hypothesis?

A) A sample mean near 80 with = .05
B) A sample mean near 80 with = .01
C) A sample mean much different than 80 with = .05
D) A sample mean much different than 80 with = .01