Question: a. What is the sample regression equation? b. Comment on the adequacy of this sample regression equation in predicting the response variable y. Use 10%

a. What is the sample regression equation? b. Comment on the adequacy of this sample regression equation in predicting the response variable y. Use 10% level of significance.

Consider the following sample data for a response variable y and a predictor variable x X 15 13 12 5 9 14 8 12 14 6 11 9 An estimated quadratic regression equation of the form y = bo + bit + b2a- was developed for the above data and the results are shown below. Regression Statistics Multiple R 0. 9266 R Square 0. 8585 Adjusted R Square 0. 7642 Standard Error 1. 4073 Observations 6 ANOVA Significance df SS MS F F Regression 2 36. 0587 18 .0294 9. 1038 0. 0532 Residual 3 5.9413 1.9804 Total UT 42 Coefficients Standard Error t Stat P-value Intercept -13. 5538 5.5533 -2. 4407 0. 0924 X 5. 0413 1 . 2196 4. 1336 0. 0257 x12 -0. 2399 0. 0608 -3.9470 0. 0290 a. What is the sample regression equation? b. Comment on the adequacy of this sample regression equation in predicting the response variable y. Use 10% level of significance

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