Table shows the number of championships won by the baseball and softball leagues of three youth baseball divisions organized by age groups.
baseball league (b) softball league (s)
ages 7 – 9 (x) 3 7
ages 10 – 12 (y) 2 2
ages 13 – 15 (z) 1 1
if the winner is in baseball league, find the probability that the winning team is in either the ages 10 - 12 division or the ages 13 - 15 division. answer in terms of a reduced fraction.
a. p(y | b) = a0
a1
b. p(z | b) = a2
a3
c. p(y or z |b) = a4
a5