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anonymous
 5 years ago
each question of a 5 mutiple choice exam has 3 possible answers.suppose a student picks an answer at random for each question. Find the probablity the student selects the correct answer on only the 1st question?
anonymous
 5 years ago
each question of a 5 mutiple choice exam has 3 possible answers.suppose a student picks an answer at random for each question. Find the probablity the student selects the correct answer on only the 1st question?

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dumbcow
 5 years ago
Best ResponseYou've already chosen the best response.0probability of picking correct answer is 1/3 so prob of picking wrong answer is 2/3 each question is an independent event to get #1 right and the rest wrong looks like this 1/3 * 2/3 * 2/3 *2/3 *2/3 =1/3 * (2/3)^4 =1/3 * 16/81 =16/243
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