# 11 - Thus x or x-sq is useful predictors of y in the population 7 H0 B2>=0 vs H1 B2<0 Since the p-v=0/2<5 and B2(hat<0 we reject Ho

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Minitab #11 1. Diminished returns and escalating effect 5 4 3 2 1 0 0 -20 -40 -60 -80 -100 -120 -140 X Y_1 Scatterplot of Y_1 vs X 5 4 3 2 1 0 0 -20 -40 -60 -80 -100 -120 -140 X Y Scatterplot of Y vs X 2. E[y]=E[-7+2x-6xsq+E]=E(-7)+E(2x)-E(6xsq)+E(E) 3. Median=-8.03 Mean=-12.75 Skewed to the left 4. Stat>Reg>option>1.5, 2.25>Fit 5. CI 95% (-108.22, -82.76) 6. Ho: B1=B2=0 vs H1: B1 or B2 not equal 0 Since the p-v=0<5%, we reject Ho

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Unformatted text preview: Thus x or x-sq is useful predictors of y in the population 7. H0: B2>=0 vs H1 B2<0 Since the p-v=0/2<5% and B2(hat)<0, we reject Ho Thus X2 is useful predictors of Y1 8. Epsilon(hat)50=Y50-(Bo+B1x50+Bxsq50) 9. Epsilon are random sample so they are independent and automatically not correlated 10. 2p/n=6/50 11. Min, max...
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## This note was uploaded on 08/31/2008 for the course BUAD 310 taught by Professor Lv during the Spring '07 term at USC.

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11 - Thus x or x-sq is useful predictors of y in the population 7 H0 B2>=0 vs H1 B2<0 Since the p-v=0/2<5 and B2(hat<0 we reject Ho

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