Suppose that a Normal model describes fuel economy (miles per gallon) for automobiles and that a
Saturn has a standardized score (z-score) of +2.2. This means that Saturns . . .
A) get 2.2 mpg more than the average car.
B) get 2.2 times the gas mileage of the average car.
C) have a standard deviation of 2.2 mpg.
D) get 2.2 miles per gallon.
E) achieve fuel economy that is 2.2 standard deviations better than the average car.

Question

Quizplus · Accepted Answer

A z-score of +2.2 indicates that the Saturn's fuel economy is 2.2 standard deviations above the average.

Suppose That a Normal Model Describes Fuel Economy (Miles Per