Osteoporosis is a degeneratve disease that primarily affects women over the age of 60 . A research analyst wants to forecast sales of StrongBones, a prescription drug for treating this debititating disease. She uses the model sales =0+1 Population +2 incone +a where Sales refers to the sales of StrongBones (in $ millions), Population is the number of women over the age of 60 (in millions), and Income is the average income of women over the age of 60 (in \$1,000s). She collects data on 29 cities across the United States and obtains the following regression results a. What is the sample regression equation? (Enter your answers in mililons rounded to 2 decimal ploces.) b-1. Interpret the coefficient of population. As the number of women over the age of 60 increases by 1 million, sales of StrongBones is predicted to increase by $845 milion As the number of women over the age of 60 increases by 1 million, soles of StrongBones is predicted to increase by $7.45 milion As the number of women over the age of 60 increases by 1 milion, sales of StrongBones is predicted to increase by $8.45 miltion, holding income constant. As the number of women over the age of 60 increases by 1 milion, sales of StrongBones is predicted to increase by $7.45 milion, holding income constant. b-2. Interpret the coefficient of income As the average income of women over the age of 60 increases by $1,000, sales or strongBones is predicted to increase by 5845 milion As the average income of women over the age of 60 increases by $1,000,5ale5 of StrongBones is predicted to increase by 145 milion As the average income of women over the age of 60 increases by $1,000, sales of StrongBones is predicted to increase by $845 milion, holding population constant. As the overage income of women over the age of 60 increases by $1,000, sales of $ trongBones is predicted to increase by \$7.45 milion, holding population constant. c. Predict Sales if a city has 16 million women over the age of 60 and their average income is $43,000. (Enter your answer in millions rounded to 2 decimal pleces.)