The graph shows a probability distribution.What is P(X<3)?

0.125

0.25

0.75

0.875

THANKS!!!

PhoenixForever May 21, 2019

#1**+2 **

Note that if we draw a vertical line at x = 3.....we have a triangle on the right with a base of 1 and a height of .25

So....the area of this triangle = (1/2) (base) (height) = (1/2) (1) (.25) = .125

So....P ( X < 3) = Total area - area of the triangle on the right = 1 - .125 = .875

CPhill May 21, 2019