There are B black balls and W white balls in the urn. One ball is repeatedly sampled at random without replacement, until either only black balls or only white balls are left in the urn. (a) Let B = 9 and W = 11. Find the probability that the outcome of the fifth sample is a black ball. (b) Find the probability that the sampling ends with vanishing white ball. (c) Find the average number of sampled balls when the sampling ends with with vanishing white ball. (d) Let B = 999 and W = 1001. Find the probability that the outcome of the fifth sample is a black ball. (e) Find the probability that the sampling ends with vanishing white ball.

College Algebra
10th Edition
ISBN:9781337282291
Author:Ron Larson
Publisher:Ron Larson
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 11ECP: A manufacturer has determined that a machine averages one faulty unit for every 500 it produces....
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There are B black balls and W white balls in the urn. One ball is repeatedly sampled at random without replacement,
until either only black balls or only white balls are left in the urn. (a) Let B = 9 and W = 11. Find the probability that
the outcome of the fifth sample is a black ball. (b) Find the probability that the sampling ends with vanishing white
ball. (c) Find the average number of sampled balls when the sampling ends with with vanishing white ball. (d) Let B
=
999 and W = 1001. Find the probability that the outcome of the fifth sample is a black ball. (e) Find the
probability that the sampling ends with vanishing white ball.
Transcribed Image Text:There are B black balls and W white balls in the urn. One ball is repeatedly sampled at random without replacement, until either only black balls or only white balls are left in the urn. (a) Let B = 9 and W = 11. Find the probability that the outcome of the fifth sample is a black ball. (b) Find the probability that the sampling ends with vanishing white ball. (c) Find the average number of sampled balls when the sampling ends with with vanishing white ball. (d) Let B = 999 and W = 1001. Find the probability that the outcome of the fifth sample is a black ball. (e) Find the probability that the sampling ends with vanishing white ball.
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