APFIVE Sampling Distribution For Slope T-Test
In a regression analysis with 40 data points, all conditions for inference are satisfied. If the null hypothesis states that the population slope equals 2 (H₀: β = 2), what is the appropriate null distribution for the test statistic (b - 2)/s_b?
A
t-distribution with 39 degrees of freedom
B
t-distribution with 38 degrees of freedom
C
Standard normal distribution
D
t-distribution with 40 degrees of freedom
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