Posted by Chrissy on .
P(A)=0.40
P(B)=0.25
The probability of both events occurring is 0.15. What is the probability of either event occurring?
A. 0.15
B. 0.50
C. 0.65
D. 0.80
Is it D?

Help Math 
TutorCat,
incorrect.
Law of addition:
P(A or B) = P(A)+ P(B) P(A and B)
source:
http://www.quickmba.com/stats/probability/ 
Help Math 
Chrissy,
I got b now thank you