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Example 3.25 from Statistics, 3.5 Tree and Venn Diagrams
(part 6)
f. Find P(B on 2nd|R on 1st).
Work it out on paper first. Then open the solution one step at a time, and stop as soon as you can finish on your own.
Solution
f. Using the tree diagram, P(B on 2nd|R on 1st) = P(R|B) = .
Discussion
If we are using probabilities, we can label the tree in the following general way:
- P(R|R) here means P(R on 2nd|R on 1st)
- P(B|R) here means P(B on 2nd|R on 1st)
- P(R|B) here means P(R on 2nd|B on 1st)
- P(B|B) here means P(B on 2nd|B on 1st)
0 of 2 steps open
How did it go?