Question

LSAT test scores are normally distributed with a mean of 500 and a standard deviation of 100. Find the probability that a randomly chosen test taker will score between 300 and 600. Round your answer to four decimal places.

Answer 1

@jim_thompson5910 a little confused on the set up!

Answer 2

first you'll need to find the z-scores

Answer 3

use the formula

z = (x-mu)/sigma

Answer 4

is mu mean?

Answer 5

yes

mu = mean
sigma = standard deviation

Answer 6

okay sweet let me see what i get

Answer 7

so i got Z=-2 and 1

Answer 8

correct

Answer 9

now use this table

http://www.math.upenn.edu/~chhays/zscoretable.pdf

to find the area to the left of z = -1

Answer 10

ie z = -1.00

Answer 11

I got it now! i just needed that formula, thank you Jim!

Answer 12

ok great