2. Two balls are to be randomly selected, with replacement, from an urn that contains 20 balls numbered 1 through 20. If X is the largest
numbered ball selected, then X is a random variable that takes on one of the values 1, 2, ..., 20. Find the cumulative distribution function of
X. Determine P{X > 15}.
Find the cumulative distribution function of X.
P{X ? i} =
Determine P{X > 15}.
P{X > 15} =
i = 1, 2, ..., 20
(Type an integer or a simplified fraction.)