A box contains 20 lightbulbs of which 6 are known to be defective. You reach in and remove 5 of them at random. What is the probability that: a) You get exactly 2 defective bulbs? b) You get 2 or 3 defective bulbs? c) You get at least one defective bulb?
A box contains 20 lightbulbs of which 6 are known to be defective. You reach in and remove 5 of them at random. What is the probability that: a) You get exactly 2 defective bulbs? b) You get 2 or 3 defective bulbs? c) You get at least one defective bulb?
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section10.8: Probability
Problem 32E
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A box contains 20 lightbulbs of which 6 are known to be defective. You reach in and remove 5 of them at random.
What is the
a) You get exactly 2 defective bulbs?
b) You get 2 or 3 defective bulbs?
c) You get at least one defective bulb?
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