The scatterplot shows the gas mileage for American automobiles and the weight of those vehicles.
American Automobiles
y
45
40
.
35
.
30
.
Gas Mileage
(in miles per gallon)
25
.
.
20
15
10
5
X
1,500 2,000 2,500 3,000 3.500
Vehicle Weight (in pounds)
Based on the scatterplot, what is the approximate gas mileage for a vehicle
weighina 4000 pounds?

If your score on your next statistics test is converted to a z score, which of these z scores would you prefer: minus2.00, minus1.00, 0, 1.00, 2.00? why? a. the z score of 2.00 is most preferable because it is 2.00 standard deviations above the mean and would correspond to the highest of the five different possible test scores. b. the z score of 0 is most preferable because it corresponds to a test score equal to the mean. c. the z score of minus2.00 is most preferable because it is 2.00 standard deviations below the mean and would correspond to the highest of the five different possible test scores. d. the z score of minus1.00 is most preferable because it is 1.00 standard deviation below the mean and would correspond to an above average