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An exam has 8 multiple choice questions. Each question has 4 possible answers, only one of...

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Question

Basic Math

An exam has 8 multiple choice questions. Each question has 4possible answers, only one of which is correct. If a student takesthis exam and answers all questions at random, what is theprobability that the student answers

(a) only the first and the last question correctly?

(b) only 2 questions correctly?

(c) at least 2 questions correctly?

Answer & Explanation Solved by verified expert
4.3 Ratings (860 Votes)
Based on the information provided in question we can concludethat it follows binomial distribution n 8 p 0 25 q 075where n 8 since there are 8    See Answer
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