Final Exam Study Guide Problem 9 Solution

In this problem, you need to calculate the probability of several events based on a table. In some cases it is easy to count the outcomes in the event…in others you need to utilize compound events to calculate the probability. This content is covered in Section 7.2.

Problem 9 A political action committee (PAC) has surveyed 240 probable voters regarding the relationship between political affiliation and their preference in the presidential front runners. The results are in the table below.

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If a voter is selected randomly from those surveyed, find the probability that the voter is

a.  a Democrat

Solution

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b.  prefers Trump

Solution

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c.  a Republican that prefers Clinton

Solution

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d.  a Democrat, given that the voter preferred Trump

Solution

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e.  preferred Clinton, given that the voter is an Independent

Solution

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