Question: Computers at Princeton An October 2007 census revealed that 40% of Princeton students primarily used Macintosh computers (MACs). Th e rest primarily used PCs. At

Computers at Princeton An October 2007 census revealed that 40%

of Princeton students primarily used Macintosh computers (MACs). Th e rest primarily used PCs. At the time of the census, 67% of Princeton students were undergraduates. Th e rest were graduate students. According to the census, 23% of Princeton’s graduate students said that they used PCs as their primary computers.

Suppose that we select a Princeton student at random.

(a) Construct a Venn diagram to represent this setting.

(b) Consider the event that the randomly selected student is a graduate student who uses a MAC. Write this event in symbolic form using the two events of interest that you chose in (a).

(c) Find the probability of the event described in (b). Explain your method.

(d) Can you make a two-way table for this setting? If so, do it. If not, explain why not.

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