Mathematics, 25.02.2020 17:38 kayleeemerson77

A diamond can be classified as either gem dash quality or industrial dash grade. Suppose that 89% of diamonds are classified as industrial dash grade.

(a) Two diamonds are chosen at random. What is the probability that both diamonds are industrial dash grade?
(b) Five diamonds are chosen at random. What is the probability that all five diamonds are industrial dash grade?
(c) What is the probability that at least one of five randomly selected diamonds is gem dash quality? Would it be unusual that at least one of five randomly selected diamonds is gem dash quality?

Would it be unusual that at least one of five randomly selected diamonds is gem dash qualitygem-quality?

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