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a survey finds that 90% of all basketball players had a major injury in their career,...

a survey finds that 90% of all basketball players had a major injury in their career, and the remaining 10% did not. Consider a random sample of 20 basketball players.

i) for this random sample of 20 basketball players, what is the expect number who had major injuries?

ii) what is the probability that among the 20 basketball players sampled, 17 or more had major injuries AND at least 1 did not?

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