5.?5 pol nts Refere nces Exercise 14-25 Algo Osteoporosis is a degenerative 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 debilitating disease. She uses the model Sales = 56 + lPopulation + EZIncorrIe + a. where Sales refers to the sales of StrongBones (in $ millions), Population is the number ofwomen over the age of 60 {in millions), and Income is the average income of women over the age of 60 [in $1,0005}. She collects data on 33 cities across the United States and obtains the following regression results: Standard Coefficients Error t Stat pVatue Intercept 16.13 3.12 3.25 9.6958 Population 8. 25 1.4-9 5. 54 6.8115 Income ?.59 6.4-2 1.15 8.3593 a. What is the sample regression equation? {Enter your answers in millions rounded to 2 decimal places.) \"nuHm b-1. Interpret the coefficient of population. 0 As the number of women over the age of 60 increases by1mi|lionv sales of StrongBones is predicted to increase by $8.26 million. 0 As the number of women over the age of 60 increases by1mi|lionv sales of StrongBones is predicted to increase by $7.59 million. '3) As the number of women over the age of 60 increases by1mi|lionv sales of StrongBones is predicted to increase by $8.26 million, holding income constant. 0 As the number of women over the age of 60 increases by1mi|lionv sales of StrongBones is predicted to increase by $7.59 million, holding income constant. b-2. Interpret the coefficient of income. 0 As the average income of women over the age of 60 increases by $1,000, sales of StrongBones is predicted to increase by $8.26 million. 0 As the average income of women over the age of 60 increases by $1,000, sales of StrongBones is predicted to increase by $7.59 million. Q As the average income of women over the age of 60 increases by $1,000, sales of StrongBones is predicted to increase by $8.26 million, holding population constant '3) As the average income of women over the age of 60 increases by $1,000, sales of StrongBones is predicted to increase by $7.59 million, holding population constant. c. Predict Sales if a city has 20 million women over the age of 60 and their average income is $40,000. {Enter your answer in millions rounded to 2 decimal places.) Predicted Sales _