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A diamond can be classified as either gem-quality or industrial-grade. Suppose that 83​% of diamonds are...

A diamond can be classified as either gem-quality or industrial-grade. Suppose that 83​% of diamonds are classified as industrial-grade.

​(a) Two diamonds are chosen at random. What is the probability that both diamonds are industrial-grade​?

​(b) Eight diamonds are chosen at random. What is the probability that all eight diamonds are industrial-grade​?

​(c) What is the probability that at least one of eight randomly selected diamonds is gem-quality​?

Would it be unusual that at least one of eight randomly selected diamonds is gem-quality​?

Math   Statistics-And-Probability   
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