Question: Coefficients: Estimate Std. Error t value Pr(>|t|) (Intercept) 1.160e+04 1.334e+03 8.690 2.43e-11 *** SPEND 3.289e+00 3.176e-01 10.354 1.03e-13 *** AREASouth 5.294e+02 7.669e+02 0.690 0.4934 AREAWest

Coefficients: Estimate Std. Error t value Pr(>|t|) (Intercept) 1.160e+04 1.334e+03 8.690 2.43e-11 *** SPEND 3.289e+00 3.176e-01 10.354 1.03e-13 *** AREASouth 5.294e+02 7.669e+02 0.690 0.4934 AREAWest 1.674e+03 8.012e+02 2.089 0.0422 (d) Using the Bonferroni procedure, compute the 95% family confidence intervals for the difference in mean response for PAY between teachers in the i. North region and the South region; ii. North region and the West region; iii. South region and the West region. (e) What do your intervals from part 3d indicate about the effect of geographic region on mean annual salary for teachers (while controlling for expenditure)

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