From above output (df=18, t≈2.101), 95% CI for β ≈

(0.86, 2.74) 1.80 ± 2.101·0.45 = 1.80 ± 0.945 ≈ (0.86, 2.74).

Confidence Intervals for the Slope of a Regression Model

AP Statistics· difficulty 4/5

From above output (df=18, t*\approx2.101), 95% CI for β \approx

Explanation

1.80 \pm 2.101\cdot0.45 = 1.80 \pm 0.945 \approx (0.86, 2.74).

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