Q1: Among 10 laptop computers, five are good and five have defects. Unaware of this, a customer buys 6 laptops. a) What is the probability of exactly 2 defective laptops among them? b) Given that at least 2 purchased laptops are defective, what is the probability that exactly 2 are defective?

A First Course in Probability (10th Edition)
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ISBN:9780134753119
Author:Sheldon Ross
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Chapter1: Combinatorial Analysis
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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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Q1: Among 10 laptop computers, five are good and five have defects. Unaware of this, a
customer buys 6 laptops.
a) What is the probability of exactly 2 defective laptops among them?
b) Given that at least 2 purchased laptops are defective, what is the probability that exactly 2
are defective?

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