# Mac or PC? A recent census at a major university revealed that 40% of its students

## Problem 56 Chapter 5.2

The Practice of Statistics | 5th Edition

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Problem 56

Mac or PC? A recent census at a major university revealed that 40% of its students mainly used Macintosh computers (Macs). The rest mainly used PCs. At the time of the census, 67% of the schools students were undergraduates. The rest were graduate students. In the census, 23% of respondents were graduate students who said that they used PCs as their main computers. Suppose we select a student at random from among those who were part of the census. (a) Make a two-way table for this chance process. (b) Construct a Venn diagram to represent this setting. (c) Consider the event that the randomly selected student is a graduate student and uses a Mac. Write this event in symbolic form based on your Venn diagram in part (b). (d) Find the probability of the event described in part (c). Explain your method.

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Statistics 130M Notes January 10, 2017 class- January 12, 2017 class January 10,2017 class Class Canceled on the 10 due to snow! January 10, 2017 Notes Syllabus notes Exams and Quizzes - Multiple choice and in class Calculator may be used in class, exams, and quizzes Exams  formal study sheet with hand written notes on a 8.5” x11” paper January 12, 2017 Mr. Russell ...

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