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Math Help - Rick and His Test

  1. #1
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    Rick and His Test

    The probability of Rick getting an A on any test is 2/3. Find the probability that he earns an A on exactly 3 of 4 tests.
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  2. #2
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    Use the binomial distribution with n = 4, x = 3 and p = 2/3
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  3. #3
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    ok........

    Quote Originally Posted by nzmathman View Post
    Use the binomial distribution with n = 4, x = 3 and p = 2/3
    Thanks for the tip.
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