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?

incorrect.

Law of addition:

P(A or B) = P(A)+ P(B)- P(A and B)

source:
http://www.quickmba.com/stats/probability/

I got b now thank you

To find the probability of either event occurring, we can use the formula:

P(A or B) = P(A) + P(B) - P(A and B)

Given that P(A) = 0.40, P(B) = 0.25, and P(A and B) = 0.15, let's substitute these values into the formula:

P(A or B) = 0.40 + 0.25 - 0.15

Simplifying:

P(A or B) = 0.65

Therefore, the correct answer is C. 0.65.

To find the probability of either event occurring, we can use the formula:

P(A or B) = P(A) + P(B) - P(A and B).

In this case, P(A) = 0.40, P(B) = 0.25, and P(A and B) = 0.15. Plugging in these values into the formula, we get:

P(A or B) = 0.40 + 0.25 - 0.15.

Simplifying, we have:

P(A or B) = 0.40 + 0.25 - 0.15
= 0.65.

Therefore, the probability of either event occurring is 0.65. So the correct answer is C.