An urn has 8 red and 12 blue balls. Suppose that balls are chosen at random...

An urn has 8 red and 12 blue balls. Suppose that balls are chosen at random and removed from the
urn, with the process stopping when all the red balls have been removed. Let X be the number of balls
that have been removed when the process stops.
a. Find P(X = 14)
b. Find the probability that a specifed blue ball remains in the urn.
c. Find E[X]

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orchestra answered 2 years ago

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