Question 5 (2 points) You love fishing but are concerned at the levels of contaminants in...
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Question 5 (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 x=34.94 Sx = 11.41 y = 7.76 Sy = 3.14 Given that the correlation coefficient which relates length of the fish and PCB levels is r = 0.949, the value of the RMS of the regression equation is A) 0.99 B) 0.31 C) 2.09 D) 3.60 E) 12.45 Question 6 (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 y= 7.76 Sx Sy 3.14 x = 34.94 = 11.41 Given that the correlation coefficient which relates length of the fish and PCB levels is r = 0.949, what is the predicted value for PCB level if the length of the fish is 20 cm? A) 3.86 B) 0.56 C) 29.54 D) 13.67 E) 6.52 Question 5 (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 x=34.94 Sx = 11.41 y = 7.76 Sy = 3.14 Given that the correlation coefficient which relates length of the fish and PCB levels is r = 0.949, the value of the RMS of the regression equation is A) 0.99 B) 0.31 C) 2.09 D) 3.60 E) 12.45 Question 6 (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 y= 7.76 Sx Sy 3.14 x = 34.94 = 11.41 Given that the correlation coefficient which relates length of the fish and PCB levels is r = 0.949, what is the predicted value for PCB level if the length of the fish is 20 cm? A) 3.86 B) 0.56 C) 29.54 D) 13.67 E) 6.52
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