israelp7761 israelp7761

10-02-2018
Mathematics

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A multiple-choice question on an economics quiz contains 10 questions with five possible answers each. compute the probability of randomly guessing the answers and getting 9 questions correct

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sqdancefan sqdancefan

10-02-2018

10C9 * (1/5)^9 * (4/5)^1 = 4.096*10^-6

About 4 chances in 1 million.

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