32, The regression equation is Ŷ = 29.29 - 0.56X, the sample size is 8, and the standard error of the slope is 0.22. What is the test statistic to test the significance of the slope?
Multiple Choice
z = -2.545
z = +2.545
t = -2.545
t = -0.560
33, The regression equation is Ŷ = 30 + 2.57X, the sample size is 18, and the standard error of the slope is 0.98. What is the critical value to test whether the slope is positive at the 0.01 significance level?
Multiple Choice
z = +2.228
t = +2.583
z = ±2.478
t = +2.957