Question # 7:
A multiple-choice test contains 10 questions. Each question has five choices for the correct answer. Only one of the choices is correct. What is the probability of making exactly 80% with random guessing?
What is the probability of passing, e.g. making at least 60% with random guessing?
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From the given information,
A multiple choice test contains 10 questions. Each with has five choices for the correct answer. Only one of the choices is correct.
This follows binomial distribution with n=10 and p=1/5 or 0.2.
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