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Q: die is rolled 20 times and the number of twos that come up is tallied. Find the probability of getting exactly four twos.
A: probability of rolling a 2 is 1/6 getting 4 out of 20 using binomial theorem: 20 choose 4 = 4845 - > 4845*(1/6)^4 *(5/6)^16
Expert answered|MrG|Points 3068|
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Asked 2/21/2013 6:40:08 PM
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