There are 20 insurance applications waiting to be processed. Ten are high risk c

Question

There are 20 insurance applications waiting to be processed. Ten are high risk customers, six are moderate risk customers and the rest are low risk customers. Your boss asks you to bring him some for processing. You select one at a time. what is the probability your first is a moderate risk customer? what is the probability your second is a moderate risk customer? what is the probability your third is a low risk customer? what is the combined probability of the above happening? P(MML) w/o replacement

Explanation / Answer

a) The probability that first is a moderate risk customer is 6/20.

b) The probability that second is a moderate risk customer is 5/19.

c) The probability that third is a low risk customer is 4/18.

d) Combined probability of MML w/o replacement is 6/20*5/19*4/18=120/6840=1/57

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