Let x be a random variable that represents the fall caribou population (in hundreds) in Denali National Park, and let y be a random variable that represents the late-winter wolf population in the park. A random sample of recent years gave the following information

x

30

34

27

25

17

23

20

y

66

79

70

60

48

55

60

a)Find the least-squares line by using the computational formulas to find the slope b of the least-squares line and the y intercept a.

b)Make a scatter diagram/sketch for the data and draw the line that best fits the data.

c)Compute the value at x = 29.