Problema Solution
Consider a political discussion group consisting of 9 Democrats, 8 Republicans, and 5 Independents. Suppose that two group members are randomly selected, in succession, to attend a political convention. Find the probability of selecting a Democrat Democrat and then an Independent Independent.
Answer provided by our tutors
You want to select a Democrat, that's 9/(9 + 8 + 5) = 9/22.
Under the first condition, you then pick an Independent, that will be:
(9/22)(5 /21) = (9*5)/(21*22) = 15/154 = 0.0974 or 9.74%.