Question 3 (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 O 43.1 9 47.2 12.3 = 34.94 = 7.76 Sy = 11.41 Sy = 3.14 Given that the correlation coefficient which relates length of the fish and PCB levels is r = 0.949, what is the intercept of the regression equation that predicts PCB level using length of fish? ( A) 1.32 ( B) -8.72Question 4 (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 12.3 F = 34.94 J = 7.76 Sy = 11.41 Sy = 3.14 Given that the correlation coefficient which relates length of the fish and PCB levels is r = 0.949, the regression equation that predicts PCB levels using fish length is ( A) PCB level = 32.92 +0.26*length of fish (B) PCB level = 32.92+3.44*length of fishZYOU/4--,UU.nimI Length (cm) PCBs (mg/kg) 35.8 7.6 30.5 5.8 18.1 4.1 43.1 9 47.2 12.3 = 34.94 y = 7.76 SX = 11.41 Sy = 3.14 Given that the correlation coefficient which relates length of the fish and PCB levels is r = 0.949, the regression equation that predicts PCB levels using fish length is A) PCB level = 32.92 +0.26*length of fish (B) PCB level = 32.92+3.44*length of fish O C) PCB level = -1.36 +0.26*length of fish ( D) Length of fish = 6.24 + 8.72*PCB level O E) Length of fish = 8.72+1.36*PCB levelI |_\\.n..;..;.:..u_ ualaauuulnuauulll.nLLuIII'JL ;. Given that the correlation coefficient which relates length of the fish and PCB levels is r = 0.949, what is the intercept of the regression equation that predicts PCB level using length of fish? Q A) 1.32 C) B) -8.72 C) C) 32.92 0 D) 6.24 C) E) -1.36 Previous Page Next Page Page 1 Of 4