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Posted by **Chrissy** on Sunday, December 30, 2012 at 7:50pm.

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**, Sunday, December 30, 2012 at 9:06pmincorrect.

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**, Sunday, December 30, 2012 at 11:46pmI got b now thank you

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