http:f/ezto.mheducation.com/hm.tpx ? Page? Safety ? Tools ? 10.00 points Exercis

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http:f/ezto.mheducation.com/hm.tpx ? Page? Safety ? Tools ? 10.00 points Exercise 15-38 Algo (Round all intermediate calculations to at least 4 decimal places.) Consider the following sample data (Use Table 2): 37 36 36 43 4031 49 47 x 39 40 39 40 38 40 4037 x225 20 23 24 22 22 21 20 a. Find the sample regression equation, )bxre. (Negative values should be indicated by a minus sign. Round your answers to 2 decimal places.) b. Construct the 95% confidence interval for E(y) rx, equals 50 and X2 equals 20 (Negative values should be indicated by a minus sign. Round your answers to 2 decimal places.) Confidence interval to c. Construct the 95% prediction interval for y if x, equals 50 ands: equals 20 (Negative values should be indicated by a minus sign. Round your answers to 2 decimal places.) Prediction Interval to

Explanation / Answer

Go to

data >data analysis>regression

you get beloe output:

Regression eq obtained is

y=112 .8-1.42x1-0.78x2

SUMMARY OUTPUT Regression Statistics Multiple R 0.382606 R Square 0.146388 Adjusted R Square -0.19506 Standard Error 6.673622 Observations 8 ANOVA df SS MS F Significance F Regression 2 38.18886 19.09443 0.42873 0.673212 Residual 5 222.6861 44.53723 Total 7 260.875 Coefficients Standard Error t Stat P-value Lower 95% Upper 95% Intercept 112.7965 88.70543 1.271585 0.259457 -115.228 340.8211 X1 -1.42426 2.287196 -0.62271 0.560771 -7.30369 4.455163 X2 -0.77728 1.424646 -0.54559 0.608793 -4.43945 2.884891

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