I need help! Can someone explain to me how to do the following math problem?

Question

anonymous · Answer

attachment

amistre64 · Answer

its just applying definitions ...

anonymous · Answer

I don't understand it

amistre64 · Answer

is it the picture itself that is confusing you, or how to work the questions?

amistre64 · Answer

it looks to me like:

S = E1 + E2

      E1 = 17+15
      E2 = 22+30

F = 15+ 22
       E1    E2

anonymous · Answer

it is how to work the questions. I do not know how to start..

amistre64 · Answer

P(F) = F/S

P(E1) = E1/S

those are just applying the definition of probability ... sucess/total

amistre64 · Answer

P(A|B) is notation for the amount of A that is in B

P(F|E1) is that amount of F in E1,  divide by the total of E1

amistre64 · Answer

you start by knowing the definitions to apply, and working with the information provided

anonymous · Answer

Alright, Thank You I'll start working on the problem =)

amistre64 · Answer

good luck, its fairly basic until that last one ...  but by then youve already defined the parts and its just a math problem