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Mathdummy
Jan 14, 2008, 09:55 AM
In the United States, 43% of people wear a seat belt while driving. If two people are chosen at random, what is the probability that both of them wear a seat belt?

Answer is 18%

What is the formula to get this answer.

PolluxCastor
Jan 14, 2008, 04:54 PM
The probability that 2 independent events both happen is the product of their individual probabilities. In this case - .43 * .43 is .1849