4) A 1974 study about endangered species includes the following. If x = number of years after 1950, and y = number of whooping crane sightings in the Arkansas National Wildlife Refuge, then
y^ = 15.36 + 1.82x , R2 = .93

a) What is the expected number of sightings in 1960? [2 pts]

b) What is the residual for the year 1960? [2 pts]

c) By how much is the number of sightings predicted to increase each year? [2 pts]

d) What is the correlation? [1 pt]

e) Interpretation: % of the variability in is accounted for by . [3 pts]

If you had $1,900,000, how many days would it take you to spend all if you spent $1 a second. (there are 86,400 seconds in a day)

The cross-sectional areas of a right triangular prism and a right cylinder are congruent. the right triangular prism has a height of 6 units, and the right cylinder has a height of 6 units. which conclusion can be made from the given information? the volume of the triangular prism is half the volume of the cylinder. the volume of the triangular prism is twice the volume of the cylinder. the volume of the triangular prism is equal to the volume of the cylinder. the volume of the triangular prism is not equal to the volume of the cylinder.

These tables represent a quadratic function with a vertex at (0, -1). what is the average rate of change for the interval from x = 9 to x = 10?