Question

Two events that are mutually exclusive could be the total marriages under 20 and the total marriages 45 +. These two are exclusive because they cannot occur at the same time.
We will let total marriages under 20 = A We will let total marriages 45+ = B
Probability for A= Probability for B=
Probability for A or B=
The total marriage for under 20=3023
the total marriages for 45+=17397
the total marriages in all age groups=108364
there are 5 age groups.

How do I find the probability of A?
How do I find the probability of B?
probability of A and B?

Answer 1

@Catlover5925

Answer 2

ok so for the probability of A put marriages for A over total marriages over all
3023 over 108364
now do the same for B

Answer 3

Ok that seems so simple, I feel like I was over looking this. So for A and B would I use the formula P(A) + P(B)= or should I use the formula P(A)*P(B)-1 ?

Answer 4

yes, and if they can be simplified then do that, then it will be finished ^.^

Answer 5

Ok @Catlover5925 So what should I do for the Probility of A and B? should use P(A)* P(B)-1? or should I add them? P(A)+P(B)?

Answer 6

i think you add them but im not sure

Answer 7

ok thank you for all of your help

Answer 8

no problem

Answer 9

Events A and B are mutually exclusive. By definition, the two events cannot occur together. Therefore the probability of A and B occurring is zero.
\[\large P(A \cap\ B)=0\]