A box contains 7 white balls, 9 black balls, and 2 red balls. a) 8 How many red balls must be added to the box so that the probability of drawing a red ball is =? 9 b) 1 How many black balls must be added to the original box so that the probability of drawing a white ball is ? a) red balls would have to be added. ***
A box contains 7 white balls, 9 black balls, and 2 red balls. a) 8 How many red balls must be added to the box so that the probability of drawing a red ball is =? 9 b) 1 How many black balls must be added to the original box so that the probability of drawing a white ball is ? a) red balls would have to be added. ***
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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A box contains 7 white balls, 9 black balls, and 2 red balls.
a)
b)
a)
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How many red balls must be added to the box so that the probability of drawing a red ball is ·?
9
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How many black balls must be added to the original box so that the probability of drawing a white ball is
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2
red balls would have to be added.
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