Asked by Nick
The soccer team's shirts have arrived in a big box and people start grabbing them. The box contains 7 medium, 12 Large, and 11 extra-large shirts.
What is the probability that the first 4 shirts are all extra large?
I have been struggling with the problem for an hour and can't seem to figure out the answer...
What is the probability that the first 4 shirts are all extra large?
I have been struggling with the problem for an hour and can't seem to figure out the answer...
Answers
Answered by
PsyDAG
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events.
First shirt = category/total = 11/30
Second shirt, since one XL shirt is gone = 10/29
Third shirt, since two XL are gone = 9/28
Fourth shirt = ?
11/30 * 10/29 * 9/28 * ? = ?
First shirt = category/total = 11/30
Second shirt, since one XL shirt is gone = 10/29
Third shirt, since two XL are gone = 9/28
Fourth shirt = ?
11/30 * 10/29 * 9/28 * ? = ?
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