Question

4.1.28 Assigned Media Question Help 3 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. Eg Click the icon to view the data table. EE! Click the icon to view the critical values table. A. The weight of the bear B. The length of the bear O C. The number of bears (b) Draw a scatter diagram of the data. Choose the correct graph below B. O A A Weight (kg) 180- OC. ALength (cm) 180- OD AWeight (kg) 1804 A Weight (kg) 180- O. ... YA 40+ 1. 40-11 100 200 Length (cm) 100 200 Length (cm) 40+ 100 200 Weight (kg) 40- 100 Length (cm) (c) Determine the linear correlation coefficient between weight and length. The linear correlation coefficient between weight and length is r= (Round to three decimal places as needed.) Enter your answer in the answer box and then click Check Answer 1 Clear All Check Answer part remaining

Answer 1

X Υ Xy x2 y2 138 110 15180.000 19044.000 12100.000 135 60 8100.000 18225.000 3600.000 130 90 11700.000 16900.000 8100.000 120.5 60 7230.000 14520.250 3600.000 149 95 14155.000 22201.000 9025.000 141 105 14805.000 19881.000 11025.000 141 110 15510.000 19881.000 12100.000 150 85 12750.000 22500.000 7225.000 166 155 25730.000 27556.000 24025.000 151.5 140 21210.000 22952.250 19600.000 129.5 105 13597.500 16770.250 11025.000 150 110 16500.000 22500.000 12100.000 ΣΧ; = 1701.500 ΣΥ; = 1225.000 ΣΧ; Υ = 176467.500 Σx = 242930.750 Σy} = 133525.000

า 8 x 1- Sน 29 โ: ราx (24) พระ - (ty) 12 x 76 67 6-120 1.5 x 1.2 12 X 1322 - 12x242930งาๆ - (701-5) (122) 0-13) . - 12 - 0 - 3 76 critical n ที่ significant 0 18) 2) S76