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28. A study of consumer smoking habits includes 186 people in the 18-22 age bracket (42...

28. A study of consumer smoking habits includes 186 people in the 18-22 age bracket (42 of whom smoke), 124
people in the 23-30 age bracket (40 of whom smoke), and 99 people in the 31-40 age bracket (21 of whom
smoke).
a. If one person is randomly selected from this sample, find the probability of getting someone who is age 18-22
or does not smoke.
b. If one person is randomly selected from this sample, find the probability of getting someone who is age 18-22
or is age 31-40.

Math   Statistics-And-Probability   
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