APFIVE Margin of Error for Regression Slope
A regression analysis yields the following computer output: b₁ = 2.5, t = 3.125, p = 0.004, df = 24. If a 95% confidence interval is desired and the critical t-value for df = 24 at α = 0.05 is 2.064, what is the margin of error for the slope?
A
2.5
B
1.65
C
0.80
D
5.16
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