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The National Governors Association publishes data on U.S. governors in Governors Political Affiliations & Terms of Office. Based on that document, we obtained the following frequency distribution for U.S. governors, as of 2013.
Party ______________ Frequency
Democratic ................... 20
Republican ................... 30
Two U.S. governors are selected at random without replacement.
a. Find the probability that the first is a Republican and the second a Democrat.
b. Find the probability that both are Republicans.
c. Draw a tree diagram for this problem similar to the one shown in Fig. 4.25 on page 194.
d. What is the probability that the two governors selected have the same political-party affiliation?
e. What is the probability that the two governors selected have different political-party affiliations? |
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