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Problem 1:
b0 = -3352.42
b1 = -762.85
b2 = 2578.41
b3 = 3352.73
b4 = -494.28
b5= 2411.14
Question 4:
4 variables are statistically significant in model 1.
Question 5:
· Decrease
· 762.85
Question 6:
· Increase
· 2578.41
Question 7:
· Hypothesis:
which implies the coefficient corresponding to CF is not significant.
which implies the coefficient corresponding to CF is significant.
· t-value:
-1.23
· p-value:
0.2184
· Conclusion:
Since the p-value is not less than the significance level 0.05, the null hypothesis is not rejected. This implies that the coefficient corresponding to CF is not significant.
Question 8:
· LB: 1871.64    
· UB: 3285.18
Question 9:
· F-statistic for full model:
· F-statistic for reduced model: 1652.62
Question 10:
Yes
Question 11:
b0 = 5531.73
b1 = -464.39
b2 = 2233.87
b3 = 2943.85
b4 = -67.17
b5= 2312.09
b6=9102.13
Question 12:
5 variables are statistically...