ASU Enrollment Summary. According to the Arizona State University Enrollment Summary, a frequency distribution for the number

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ASU Enrollment Summary. According to the Arizona State University Enrollment Summary, a frequency distribution for the number of undergraduate students attending Arizona State University (ASU) in the Fall 2012 semester, by class level, is as shown in the following table. Here, 1 = freshman, 2 = sophomore, 3 = junior, and 4 = senior.

Class level 12 3 4 No. of students 9,652 11,115 17,302 21,114 Let X denote the class level of a randomly selected ASU undergraduate.

a. What are the possible values of the random variable X?

b. Use random-variable notation to represent the event that the student selected is a junior (class-level 3).

c. Determine P(X = 3), and interpret your answer in terms of percentages.

d. Determine the probability distribution of the random variable X.

e. Construct a probability histogram for the random variable X.

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