Answers
Answer:-
Given That:-
An article in Technometrics (1974, Vol. 16, pp. 523-531) considered the following stack-loss data from a plant oxidizing ammonia to nitric acid.
Given,
(a) Fit a linear regression model relating the results of the stack loss to the three regressor variables. Round your answers to two decimal places (e.g.
98.76).
Data fit in excel goto data 
data analysis Regression Select data ok
(b) Estimate o Round your answer to two decimal places (e.g. 98.76).
M.S.S = 10.38 = 
(c) Use the model in part (a) to predict stack loss when x1 = 61, X2 = 25, and x3 = 84. Round your answer to one decimal place (e.g. 98.7).
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SUMMARY OUTPUT ter RE LU ET at Regression Statistics Multiple R 0.956424136 5 R Square 0.914747127 6.
Adjusted-R Square 0.899702503 Standard Error 3.221330485 8. Observations 21 21.95 10 ANOVA df SS Significance F 2.68781E-09 3 12 Regression 13 Residual 14 Total 15 MS F 1892.829604 630.9432 60.80226. 176.4084915 10.37697 2069.238095 17 20 ht + HERRE 16 17. Intercept 18 X1 Coefficients -38.45015002 0.731576554 1.242929041 Standard Error t Stat P-value 12.03857227 -3.19391 0.005317 0.137616143 5.316066 5.69E-05 0.36865985 3.371479 0.003625 0.152480908 -1.09256 0.289829 Lower 95% Upper 95%ower 95.09pper 95.0% -63.84931733 -13.051-63.8493 - 13.051 0.441231872 1.021921 0.441232 1.021921 0.465124746 2.020733 0.465125 2.020733 0.48830103 0.155112 -0.4883 0.155112 19 X2 ten 20 X3 -0.166594436
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y = -38.45 + 0.73(X1) + 1.24(X2) – 0.17(X3)
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