A simple linear regression is fit on n = 30 observations.
What is df for the t-test on slope?
- A
27
- B
29
- C
30
- Dcheck_circle
28
Explanation
df = n - 2 = 30 - 2 = 28 (estimating intercept and slope).
Carrying Out a Test for the Slope of a Regression Model
AP Statistics· difficulty 1/5
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