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Which of the following is a discrete random variable? (Check one) I. The average height of a randomly selected group of boys. II. The annual

Which of the following is a discrete random variable? (Check one) I. The average height of a randomly selected group of boys. II. The annual number of sweepstakes winners from New York city. III. The number of presidential elections in the 20th century. (A) I only (B) II only (C) III only (D) I and II (E) II and III

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