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Problem_11.31 - Problem 11.31 Give the 95 confidence...

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Unformatted text preview: Problem 11.31 Give the 95% confidence interval for [32 through [35 from Table 11.4. n=150 tod2,n—k—1 3 t.025,144 3‘ 1-93 52:5.50 slog: 1.30 5.60i(1.98)(1.30) 3.05 3 B2 g 8.15 53 = 10.35 sb3 : 8.88 10.35 i (1.96)(6.88) 31.8 g 83 g 23.83 54:34.5 sb4=2.70 3.45 a (1.98)(2.70) —1.84 g B4 g 8.74 55=-4.25 sb5=038 4.1.25 i (1.98)(0.38) 4.90 s 85 s 351 The confidence intervals for {33 and [34 contain zero, so those parameter estimates are not significantly different from zero, and the corresponding independent variables could dropped from the equation. ...
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