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    random variable and a probability distribution

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    1. Discuss the concepts of random variable and a probability distribution.

    2. A university found that 20% of its students withdraw without completing the introductory statistics course. Assume that 20 students registered for the course.

    a. Compute the probability that 2 or fewer will withdraw

    b. Compute the probability that exactly 4 will withdraw

    c. Compute the probability that more than 3 will withdraw

    d. Compute the expected number of withdrawals

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    Solution Summary

    This solution clarifies random variables and probability distributions.