SOLUTION: Find the z-score location of a vertical line that separates a normal distribution as described in each of the following. a. 20% in the tail on the left b. 40% in the tail on th

Algebra ->  Probability-and-statistics -> SOLUTION: Find the z-score location of a vertical line that separates a normal distribution as described in each of the following. a. 20% in the tail on the left b. 40% in the tail on th      Log On


   

Question 387977: Find the z-score location of a vertical line that separates
a normal distribution as described in each of the
following.
a. 20% in the tail on the left
b. 40% in the tail on the right
c. 75% in the body on the left
d. 99% in the body on the right
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi

Using chart, calculator or Excel function NORMSINV(P)to find z-score: 

a. 20% in the tail on the left NORMSINV(.20) = -.8416

b. 40% in the tail on the right    NORMSINV(60) = .2533

c. 75% in the body on the left   NORMSINV(.75)= .6745

d. 99% in the body on the right  NORMSINV(.01)=  -2.3263