Question 1 (2 points) If we predict Y from X based solely from looking at the scatterplot and regression line, what Y value is associated with an X = 70? 23 22 21 20 19 18 15 Scatterplot of Y vs X 14 50 80 90 100 A) 20 B) 18.2 C) 17 D) 15 E) 23 Question 2 (2 points) You love fishing but are concerned at the levels of contaminants in fish in your local Kalamazoo River. As part of a study in monitoring levels of chemical contaminants in Carp fish in order to provide safe eating guidelines, you set about measuring levels of polychlorinated biphenyls (PCBs) in 5 randomly sampled fish caught in the Kalamazoo River. Data are summarized in the table below. Source: https://www.michigan.gov/mdhhs/0,5885,7-339-71548 54783_54784_54785_58671- 296074,00.html Length (cm) PCBs (mg/kg) 35.8 7.6 30.5 5.8 18.1 4.1 43.1 9 47.2 34.94 S=11.41 12.3 =7.76 S = 3.14 Given that the correlation coefficient which relates length of the fish and PCB levels is r = 0.949, what is the slope of the regression equation that predicts PCB levels based on length? A) 0.26116 B) 8.72571 C) 1.58896 D) 0.94461 E) 3.45000