Random variables and probability -sampling without replacemt

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Reference no: EM13121477

Random Variables and Probability : Sampling Without Replacement

A carton of 30 lightbulbs includes 5 defective ones. If 4 light bulbs are drawn at random (without replacement), what is the probability that;

(a) 2 of the selected light bulbs are defective.

(b) Not all the selected light bulbs are defective.

Reference no: EM13121477

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