- #1
eric.l
- 5
- 0
Homework Statement
Given two events, A and B, state why each of the following is not possible. Use formulas or equations to illustrate your answer.
d. P(B) = 0.24 and P(B|A) = 0.32
Homework Equations
P(A ∩ B) = P(A) * P(B|A)
P(B|A)= (P(A ∩ B))/P(A)
P(A|B)= (P(A ∩ B))/P(B)
The Attempt at a Solution
My teacher gave us the hint that P(B) ≥ P(A ∩ B), so:
P(B) ≥ P(A ∩ B)
P(B) ≥ P(A) * P(B|A)
P(B) ≥ P(A) * P(A ∩ B)/P(A), the P(A)'s cancel to get right back to
P(B) ≥ P(A ∩ B)
and here I am, lost. I've no idea if this is even remotely on the right track, but that was my attempt and fail.