The critical value for a two-tailed test of H₀: β₁ = 0 at α = .05 in a simple regression with 22 observations is: A)±1.725 B)±2.086 C)±2.528 D)±1.960

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For a two-tailed test with α = 0.05 and 22 observations, the degrees of freedom for the t-distribution is 20 (n-2). The critical t-value for 20 degrees of freedom at α/2 = 0.025 in each tail is approximately ±2.086.

The Critical Value for a Two-Tailed Test of H0: β1

The Critical Value for a Two-Tailed Test of H₀: β₁