Scores, X, on a standardized test are normally distributed with

mean = 600

standard deviation = 100

A score, X, is selected at random.

Find

1. 

P(X< 600) =

Group of answer choices

.84134

.50

.95

.997

2. 

P(X < 100) =  

Group of answer choices

0

1

.9545

.02275

3.

P(400< X < 800) =

Group of answer choices

.9772

.9545

.02275

.6826