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Seven balls are randomly withdrawn from an urn that
Chapter 2, Problem 35P(choose chapter or problem)
Problem 35P
Seven balls are randomly withdrawn from an urn that contains 12 red, 16 blue, and 18 green balls. Find the probability that
(a) 3 red, 2 blue, and 2 green balls are withdrawn;
(b) at least 2 red balls are withdrawn;
(c) all withdrawn balls are the same color;
(d) either exactly 3 red balls or exactly 3 blue balls are withdrawn.
Questions & Answers
QUESTION:
Problem 35P
Seven balls are randomly withdrawn from an urn that contains 12 red, 16 blue, and 18 green balls. Find the probability that
(a) 3 red, 2 blue, and 2 green balls are withdrawn;
(b) at least 2 red balls are withdrawn;
(c) all withdrawn balls are the same color;
(d) either exactly 3 red balls or exactly 3 blue balls are withdrawn.
ANSWER:
Solution:
Step 1 of 5:
It is given that an urn contains 12 red balls, 16 blue balls and 18 green balls.
7 balls are randomly selected from the urn.
Using this we need to find the required probabilities.