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In a report on high school graduation, it was stated that 85% of high school students...

In a report on high school graduation, it was stated that 85% of high school students graduate. Suppose 3 high school students are randomly selected from different schools. a.)What is the probability that all graduate? b.) What is the probability that exactly one of the three graduates? c.) What is the probability that none graduate?

Please provide detailed explanation and what method of probability is used?

Math   Statistics-And-Probability   
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