HWsolutions9

HWsolutions9 - 11-2. a) y 0 = 0 + 1 x1 S xx = 143215.8 -...

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Unformatted text preview: 11-2. a) y 0 = 0 + 1 x1 S xx = 143215.8 - 1478 = 33991.6 20 )(12 S xy = 1083.67 - (147820 .75) = 141.445 2 141.445 ^ S 1 = xy = = 0.0041612 S xx 33991.6 ^ = 12.75 - (0.0041612)( 1478 ) = 0.3299892 0 20 20 ^ y = 0.3299892 + 0.0041612 x SS E 0.143275 ^ 2 = MS E = = = 0.00796 n-2 18 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 -50 0 50 100 y x ^ y = 0.3299892 + 0.0041612(85) = 0.683689 ^ c) y = 0.3299892 + 0.0041612(90) = 0.7044949 ^ d) = 0.00416 b) 1 11.7. a) Predictor Constant x S = 3.660 Coef 33.535 -0.03540 StDev 2.614 0.01663 T 12.83 -2.13 P 0.000 0.047 R-Sq = 20.1% R-Sq(adj) = 15.7% Analysis of Variance Source DF SS Regression 1 60.69 Error 18 241.06 Total 19 301.75 MS 60.69 13.39 F 4.53 P 0.047 ^ 2 = 13.392 ^ y = 33.5348 - 0.0353971x ^ b) y = 33.5348 - 0.0353971(150) = 28.226 ^ c) y = 29.4995 ^ e = y - y = 31.0 - 29.4995 = 1.50048 11-13. ^ ^ ^ ^ 0 + 1 x = ( y - 1 x ) + 1 x = y ...
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HWsolutions9 - 11-2. a) y 0 = 0 + 1 x1 S xx = 143215.8 -...

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