The scores on a standardized test are normally distributed with a mean of 500 and a standard deviation of 100. sofia scored 632 on the test. what percent of students scored below sofia?

About 90.66%  of students scored below Sofia.

Step-by-step explanation:

Given : The scores on a standardized test are normally distributed with and

Using the formula for z-value :

Z-score for x= 632 will be :-

Using standard normal  distribution table for z, the probbaillity that the students scored below Sofia will be :-

In percent,

Hence, about 90.66%  of students scored below Sofia.

question 1 is 8, question 2 is 9, question 3 is 24

step-by-step explanation:

now, the numbers they give you at the top are the key. from there, you just have to plug and chug! let's try 1, 2, and 3!

key: a=3, b=5, c=6

1. a+5

remember, a=3, so we plug that in to get 3+5=8

2. 15-c

c=6, so we plug that in to get 15-6=9

3. 4b

b=6, so we plug it in to get 4*6=24

time to try the rest on your own! if you put the answers below in a comment, i'll check them for you!

2x^2+5x+17

your welcome. : )