Voter turnout drops steadily as income level declines. The following table gives the percentage of eligible voters in a certain city, categorized by income, who responded with "did not vote" in the 2000 presidential election. The table also gives the number of eligible voters in the city, categorized by income. Income (percentile)      Percent Who "Did Not Vote"      Eligible Voters  0–16      51      4,000         17–33      31      11,000         34–67      20      17,500         68–95      15      12,500          96–100      13      5,000         If an eligible voter from this city who had voted in the election is selected at random, what is the probability that this person had an income in the 17-33 percentile? (Round your answer to three decimal places.)

Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter12: Probability
Section12.3: Conditional Probability; Independent Events; Bayes' Theorem
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Voter turnout drops steadily as income level declines. The following table gives the percentage of eligible voters in a certain city, categorized by income, who responded with "did not vote" in the 2000 presidential election. The table also gives the number of eligible voters in the city, categorized by income.

Income
(percentile)
     Percent Who
"Did Not Vote"
     Eligible Voters
 0–16      51      4,000        
17–33      31      11,000        
34–67      20      17,500        
68–95      15      12,500        
 96–100      13      5,000        

If an eligible voter from this city who had voted in the election is selected at random, what is the probability that this person had an income in the 17-33 percentile? (Round your answer to three decimal places.)

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