SOLUTION: A quiz has 5 multiple choice questions. There are 3 choices for each question, with only one correct answer. Thus the probability of guessing the correct answer for any question is
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Question 585877: A quiz has 5 multiple choice questions. There are 3 choices for each question, with only one correct answer. Thus the probability of guessing the correct answer for any question is 1/3. A student guesses on all 5 questions. What is the probability they get exactly 3 correct? Give answer to the nearest thousandth as a decimal
Answer by sudhanshu_kmr(1152) (Show Source): You can put this solution on YOUR website!
probability of correct answer = 1/3
probability of wrong answer = 2/3
By using Binomial probability...
probability of exactly 3 correct answer = 5C3 *(1/3)^3 * (2/3)^2
if any doubt, feel free to ask......
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