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OpenStudy (anonymous):
There are 20 disks in a bag numbered 1 through 20. What is the probability an even number greater than 9 is chosen at random, given the number is greater than 9?
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OpenStudy (anonymous):
6/20 which reduces to 3/10 or 0.3
OpenStudy (anonymous):
This is conditional probability, "...given the number is greater than 9." The answer is not 6/20
OpenStudy (anonymous):
Then please explain.
OpenStudy (anonymous):
The numerator is 6. The denominator is the numbers greater than 9.
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