Indicate which variable you think should be the predictor (x) and which variable should be the response (y). Explain your choices. a. You have collected data on used cars for sale. The variables are price and odometer readings of the cars. b. Research is conducted on monthly household expenses. Variables are monthly water bill and household size. c. A personal trainer gathers data on the weights and time spent in the gym for each of her clients. a. Choose the correct choice below. O A. The predictor is odometer reading. The response is price. Cars with higher mileage have been on the road longer, and have likely retained less of their original value. O B. The predictor is odometer reading. The response is price. Cars with higher mileage have been on the road longer, and have likely retained more of their original value. Oc. The predictor is price. The response is odometer reading. Cars that have retained more of their original value are less reliable, and have likely been on the road for a shorter amount of time. O D. The predictor is price. The response is odometer reading. Cars that have retained more of their original value are more reliable, and have likely been on the road longer. b. Choose the correct choice below. O A. The predictor is monthly water bill. The response is household size. Larger water bills tend to result in larger families. O B. The predictor is monthly water bill. The response is household size. Larger water bills tend to result in smaller families. OC. The predictor is household size. The response is monthly water bill. Larger households tend to use less water. O D. The predictor is household size. The response is monthly water bill. Larger households tend to use more water. c. Choose the correct choice below. O A. The predictor is time spent in the gym. The response is weight. Clients who have spent more time working out are more likely to have lost weight. O B. The predictor is weight. The response is time spent in the gym. Clients with lower weights are less likely to have spent a large amount of time working out. O C. The predictor is weight. The response is time spent in the gym. Clients with lower weights are more likely to have spent a large amount of time working out. O D. The predictor is time spent in the gym. The response is weight. Clients who have spent more time working out are less likely to have lost weight.