Question: A quiz in a statistics course has four multiple-choice questions, each with five possible answers. A passing grade is three or more correct answers to

A quiz in a statistics course has four multiple-choice questions, each with five possible answers. A passing grade is three or more correct answers to the four questions. Allison has not studied for the quiz. She has no idea of the correct answer to any of the questions and decides to guess at random for each.
a. Find the probability she lucks out and answers all four questions correctly.
b. Find the probability that she passes the quiz.

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