Based upon a sample of 10 cases from her files, a pediatrician has observed a relationship between how much parents smoke, measured as the total number of cigarettes smoked around the child per day (X) and the number of respiratory infections that are observed in her patients every year (Y), in which r = .65. The X = 336, X = 13010, and sx = 13.83. The Y = 69, Y = 569, and sy = 3.21. Use these data to respond to the following: How much of the variance in X is shared with or explained by the variance in Y? Base your response on the adjusted statistic. Group of answer choices 42 percent 35 percent .35 percent .42 percent