Question

Find the area of the shaded region. The graph depicts the standard normal distribution with mean 0 and standard deviation 1. -3.39 2.26 -1.13 1132263393 B) 0.8708 A) 0.8907 C) 0.8485 D) 0.1292 -1.82 A) -0.0344 B) 0.4656 C) 0.0344 D) 0.9656 Find the indicated z score. The graph depicts the standard normal distribution with meant and standard deviation 1. 3) Shaded area is 0.4013. 0.40131 A) 0.25 B) 0.57 C) -025 D) -0.57

Answer 1

Solution:

1 ) Shaded area = P(Z < 1.13 ) = 0.8708 ...use z table

2) Shaded area = P(Z > -1.82)

= 1 - P(Z < -1.82)

= 1- 0.0344

=  0.9656

3) Shaded area is 0.4013

Area is to the left of z score

P(Z < z score ) = 0.4013

From z table , search 0.4013 probability and see corresponding z value.

Required z score = -0.25