Answer Happy

39. A baby was born weighing 7.7 pounds. The weight of the baby was recorded at 1, 2, and 3 months after birth. The data is as follows: Time (X) Weight (Y) O mo (birth) 7.7 1 8.9 2 10.7 3 12.7 mean = 1.5 Imean = 10 sd = 1.291 sd = 2.182 Let's say we measured the weight of the baby at 1.5 months and it weighed 10.2 lbs. What is the residual of this point? O 0.2 lbs 0 -0.2 lbs O 0.7 lbs 0 -0.7 lbs 40. Regardless of your answer to the previous questions, let's say the slope was 1.40. What does this mean? O For each additional 1.40 months, we expect the weight to increase by 1 pound. For each additional month, we expect the weight to increase by 1.40 pounds. The correlation between age in months and weight is 1.40. 41. If we were to measure the weight variable in kilograms, rather than pounds, how would that change the correlation coefficient r? (One pound is 0.45 kilograms) The correlation coefficient would get smaller, but main positive. The correlation coefficient would stay the same. The correlation coefficient would get larger, but remain positive. The correlation coefficient would become negative.