Question 15 5 pts Select the appropriate interpretation for the slope of the linear regression equation below (ignoring the concept of statistical significance). Y (Dependent Variable) = Cost of a house in thousands of dollars X (Independent Variable) = size of the house in hundreds of square feet yhat = 10 + 12.3*X For every 1 hundred square feet increase in the size of the house then cost of the house will increase on average by 12.3 thousand dollars O For every 1 hundred square feet increase in the size of the house then cost of the house will decrease on average by 12.3 thousand dollars For every 1 thousand dollar decrease in the cost of the house then the size of the house will on average be 12.3 hundred square feet smaller For every 1 thousand dollar increase in the cost of the house then the size of the house will on average be 12.3 hundred square feet larger