Researchers initiated a long-term study of the population of American black bears. One aspect of the study was to develop a model that could be used to predict a bear's weight (since it is not practical to weigh bears in the field). One variable thought to be related to weight is the length of the bear. The accompanying data represent the lengths and weights of 12 American black bears. Complete parts (a) through (d) below. (b) Draw a scatter diagram of the data. Choose the correct graph below. Total Length (cm) Weight (kg) 139.0 110 135.0 60 139.0 90 O A. OB. C. 120.5 60 149.0 85 AWeight (kg) Q AWeight (kg) 180- Q Weight (kg) O D. Q ALength (cm) 141.0 180- 180- 180- 100 141.0 110 150.0 85 Q 13 166.0 155 151.5 140 40- 100 129.5 200 105 40 100 200 40+ 2 100 Length (cm) Length (cm) Length (cm) 150.0 R 200 40- 100 200 Weight (kg) 110 Critical Values for Correlation Coefficient n 30.997 4 0.950 5 0.878 6 0.811 7 0.754 8 0.707 9 0.666 10 0.632 11 0.602 12 0.576 13 0.553 14 0.532 15 0.514 16 0.497 17 0.482 18 0.468 19 0.456 20 0.444 21 0.433 22 0.423 23 0.413 24 0.404 25 0.396 26 0.388 27 0.381 28 0.374 29 0.367