Question: Problem 2.39 From a batch of 20 radios a sample of size 3 is randomly selected for inspection. If there are six defective radios in

Problem 2.39 From a batch of 20 radios a sample of size 3 is randomly selected for inspection. If there are six defective radios in the batch what is the probability that the sample contains:

(a) only defectives?

(b) one defective and two non-defectives?

(c) only non-defectives?

(d) two defectives and one non-defective?

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