Question 952135
p(a or b) is equal to p(a) + p(b) - p(ab)
a represents the event of passing jones.
b represents the event of passing smith.
ab represents the event of passing both smith and jones.
p(a or b) = p(a) + p(b) - p(ab) = .62 + .34 - .30 = .66
probability of passing smith or jones is 66%.