Dex Research Limited conducted a research to investigate consumer characteristics that can be used to predict the amount charged by credit card users. The following multiple regression output is based on a data collected by this research company on annual income, household size and annual credit card charges for a sample if 50 consumers.

Regression Statistics

Multiple R = 0.9086, R Square= A , Adjusted R Square= 0.8181 , Standard Error =398.0910, Observations =B

ANOVA df SS MS F Significance F Regression 2 D E G 1.50876E-18 Residual C 7448393.148 F Total 49 42699148.82 Coefficients Standard Error t Stat P-value Intercept 1304.9048 197.6548 6.6019 3.28664E-08 Income ($1000s) 33.1330 3.9679 H 7.68206E-11 Household Size 356.2959 33.2009 10.7315 3.12342E-14

a. Complete the missing entries from A to H in this output

b. Estimate the annual credit card charges for a three-person household with an annual income of $40,000.

c. Did the estimated regression equation provide a good fit to the data? Explain