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Exam 4 4. There are 3 defective rolls out of 10 rolls of film in a box. Two rolls are to be selected for developing,

Exam 4

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4. There are 3 defective rolls out of 10 rolls of film in a box. Two rolls are to be selected for developing, one at a time, without replacement. a) What is the probability that first roll selected is a defective and the second roll selected is a defective? b) What is the probability both are NOT defective? c) What is the probability at least one is NOT defective

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