Suppose that the ages of cars driven by employees at a company are normally distributed with a mean of 8 years and a standard deviation of 3.2 years. what is the z-score of a car that is 9.1 years old?

There follows the formula for "z-score:"

raw score - mean

z =

standard dev

9.1 - 8

Here, the z-score is z = = 0.344

3.2

answer: sine

step-by-step explanation:

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.