Question

Mand N are two events P(M) = 0,60, P(N) = 0.20, and P (M and N) = 0.1.

Find the probability of P(Mor N).
P(92)
PM
Mand N are inche ents
0.2
0.5
0.6
0.7

Answer 1

0.7

Explanation:

This can be easily solved if we know the formula:

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

So, for this problem, we can modify the formula to be:

P(M or N) = P(M) + P(N) - P(M and N)

Using given information, we can solve:

P(M or N) = P(M) + P(N) - P(M and N)

P(M or N) = 0.6 + 0.2 - 0.1

P(M or N) = 0.7

Last answer choice is right, 0.7