Wildlife biologists monitor the ecological health of animals. For large animals whose habitat is hard to access, such as the Rocky Mountain elk, this can be a problem. Is it possible to reliably estimate the weight of an elk using the elk's chest girth? Here is a scatterplot showing x = chest girth (cm) and y = weight (kg) for 19 randomly selected Rocky Mountain elk, along with additional computer output for a least-squares regression line. The mean weight for these elk is 231 kg. (Context and data from Statistics, Learning from Data.)

the answer is c just got it on ed

step-by-step explanation:

55.44 inches

step-by-step explanation:

part a. assuming a perfectly linear relationship, we can find the slope from the first two data points.

slope = m = (change in rainfall)/(change in years)

= (61.80 -62.33)/(2005 -2004) = -0.53/1 = -0.53

then the point-slope form of the equation of the line can be written as

y = m(x -h) +k . . . . . m = -0.53, (h, k) = (0, 62.33)

y = -0.53x +62.33 . . . x = years after 2004

part b. in 2017, x = 2017 -2004 = 13. then the predicted rainfall is

y = -0.53·13 +62.33 = 55.44 . . inches

the predicted rainfall in 2017 is 55.44 in.

56 44 2 4

step-by-step explanation: