Please help with all questions...8

An agent for a real estate company in a large city would like to be able to predict the monthly rental cost for apartments, based on the size of the apartment, as defined by square footage. A sample of eight apartments in a neighborhood was selected, and the information gathered revealed the data shown below. For these data, the regression coefficients are be = 332.5714 and b, = 0.8671, Complete parts (a) through (d). Monthly Rent ($) 875 1,450 825 1,600 1,950 975 1,700 1,350 Size (Square Feet) 800 1,250 1,050 1,100 2,000 700 1,300 1,100 a. Determine the coefficient of determination, r, and interpret its meaning. 2 =(Round to three decimal places as needed.) What is the meaning of r?? A. r measures the proportion of variation in apartment size that cannot be explained by the variation in monthly rent. O B. r measures the proportion of variation in monthly rent that cannot be explained by the variation in apartment size. O C. r measures the proportion of variation in apartment size that can be explained by the variation in monthly rent. O D. r measures the proportion of variation in monthly rent that can be explained by the variation in apartment size. b. Determine the standard error of the estimate, Syx- Syx = (Round to three decimal places as needed.) c. How useful is this model for predicting the monthly rent? A. It is not very useful for predicting the monthly rent because although r is close to 1, Syx is fairly small compared to the actual rents. O B. It is very useful for predicting the monthly rent because r is close to 1 and Syx is fairly small compared to the actual rents. C. It is not very useful for predicting the monthly rent because r is close to 0 and Swv is fairly small compared to the actual rents. Click to select your answer(s)