Scores on Ms. Nash's test have a mean of 64 and a standard deviation of 9. Steve has a score of 52. Convert Steve's score to a z-score. (Round to two decimal places if necessary.)

a. 58.2
b. –1.33
c. 1.33
d. –2

b. –1.33

Step-by-step explanation:

The z-score measures how many standard deviations a score X is above or below the mean.

It is given by the following formula:

In which is the mean and is the standard deviation.

In this problem, we have that:

. We have to find Z

So the correct answer is:

b. –1.33

based on context clues you gave i'm assuming the answer would be c.

the graph in the attached figure

step-by-step explanation:

we have

using a graphing tool

the graph in the attached figure

the roots are ( x-intercepts) x=-0.5,x=1,x=3

the y-intercept is the point (0,3)