Who’s the boss 2011? According to Industry Canada, 17% of all small businesses were owned by women at the end of 2011. You call some small business firms doing business locally, assuming that the national percentage is true in your area.

a) What’s the probability that the first three you call are all owned by women?

b) What’s the probability that none of your first four calls finds a firm that is owned by a woman?

c) Suppose none of your first five calls found a firm owned by a woman. What’s the probability that your next call does?