Question: Consider selecting at random a student who is among the 15,000 registered for the current semester at a school. Let X be the number of

Consider selecting at random a student who is among the 15,000 registered for the current semester at a school.

Let X be the number of courses for which the selected student is registered and suppose that X has probability distribution

x: 1 2 3 4 5 6

P(x): 0.01 0.03 0.13 0.25 0.39 0.19

  1. Find the cdf of X.
  2. Find the expected number of courses taken by a student in this semester.
  3. Find the standard deviation of X.
  4. Find the median of this distribution.

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