- #1
r0bHadz
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Homework Statement
Among 10 laptop computers, five are good and five have defects. Unaware of this, a
customer buys 6 laptops
What is the probability of exactly 2 defective laptops among them?
Homework Equations
The Attempt at a Solution
I'm having a hard time looking at this problem from the definitions in my book.
It seems to me that P(2/6 chosen laptops are defective) is not independent of P(5/10 laptops are defective),
but P(5/10 laptops are defective) is independent of P(2/6) chosen laptops, which would be impossible. This implies that I am looking at this problem from the wrong perspective
also it seems to me, that 1/6 of the chosen laptops, should be defective with probability .5