The following data provides the monthly Comcast cable bill for a random sample of 20 households along with the number of televisions in the household (TV), the number of people living in the household (People), and the number of years that household has been a Comcast customer (Years).

A. Develop a regression equation that will predict the monthly Comcast cable bill for a household based on the number of televisions in the household, the number of people living in the household, and the number of years that household has been a Comcast customer.
B. Construct a 95% confidence interval to estimate the average monthly cable bill for a household that has three televisions, has four people in the household, and has been a Comcast customer for 10 years.
C. Show the calculations for the multiple coefficient of determination for the Comcast cable bill model and interpret its meaning.

Bill TV $56 1 $59 3 $67 3 $75 2 $76 4 $82 1 $84 3 $84 1 $84 4 $90 2 $91 3 $100 2 $100 2 $102 4 $104 3 $104 3 $112 4 $114 4 $130 5 $135 5 People Years 10