An urn contains 5 yellow marbles and 4 blue marbles. One marble is removed, its color noted, and not replaced. A second marble is removed and its color is noted. (a) What is the probability that both marbles are yellow? blue? (b) What is the probability that exactly one marble is yellow?

An urn contains 5 yellow marbles and 4 blue marbles. One marble is removed, its color noted, and not replaced. A second marble is removed and its color is noted. (a) What is the probability that both marbles are yellow? blue? (b) What is the probability that exactly one marble is yellow?

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

An urn contains

yellow

marbles and

blue

marbles. One marble is removed, its color noted, and not replaced. A second marble is removed and its color is noted.

(a) What is the probability that both marbles are

yellow?

blue?

(b) What is the probability that exactly one marble is

yellow?

(a)

Pr(YY)=nothing

(Type an integer or a simplified fraction.)

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