#### MathNugget

##### New member

- Joined
- Feb 1, 2024

- Messages
- 36

Say A is the sum of [imath]A_1 \: and \: A_2[/imath] ([imath]A_2[/imath] can be considered 0 in the situation we don't go from [imath]A_1[/imath] to [imath]A_2[/imath]).

How would I calculate the mean of A? E(A)

It looks to me like it's a discrete function, so E(A) would be [imath]\sum outcome[/imath] x P(outcome) , for all possible outcomes.

So, it would be

E(A)=(1-b)[imath]A_1[/imath]+b([imath]A_1[/imath] + [imath]A_2[/imath]).

How am I supposed to get an actual value out of it?