a) the expected number of purple marbles, E(X). b) the probability that exactly 3 of the 5 chosen marbles will be purple. (P(x = 3) = c) the probability that at least 1 of them will be purple.
a) the expected number of purple marbles, E(X). b) the probability that exactly 3 of the 5 chosen marbles will be purple. (P(x = 3) = c) the probability that at least 1 of them will be purple.
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Question
A bag contains 20 marbles, 12 of them are purple. Let the number of purple marbles drawn be X. For this hypergeometric probability distribution, if 5 marbles are chosen, without
replacement, determine (to four decimal places of accuracy):
a) the expected number of purple marbles, E(X).
b) the probability that exactly 3 of the 5 chosen marbles will be purple.
(P(x = 3) =
c) the probability that at least 1 of them will be purple.
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