Modern medical practice tells us not to encourage babies to become too fat. Is there a positive correlation between the weight x of a 1-year old baby and the weight y of the mature adult (30 years old)? A random sample of medical files produced the following information for 14 females. x (lb) 20 23 25 23 20 15 25 21 123 17 24 y (lb) 26 22 18 120 19 121 121 130 120 145 130 130 130 130 140 110 115 In this setting we have Ex = 298, Ey = 1765, Ex? = 6484, Ey? = 223,661, and Exy = 37,747. (a) Find x, y, b, and the equation of the least-squares line. (Round your answers for x and y to two decimal places. Round your answers for least-squares estimates to four decimal places.) X = 21.2857 V = 126.0714 b= 1 2617 = 2.1286 X + 1.2617 4 x Need 95% Confidence Interval Lower & Upper (g) Find a 95% confidence interval for weight at age 30 of a female who weighed 16 pounds at 1 year of age. (Round your answers to two decimal places.) lower limit 98.92 X lb upper limit 139.89 X lb