SOLUTION: A factory received a shipment of 16 sprockets, and the vendor who sold the items knows there are 7 sprockets in the shipment that are defective. Before the receiving foreman accept

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Question 1186728: A factory received a shipment of 16 sprockets, and the vendor who sold the items knows there are 7 sprockets in the shipment that are defective. Before the receiving foreman accepts the delivery, he samples the shipment, and if too many of the sprockets in the sample are defective, he will refuse the shipment.
For each of the following, give your responses as reduced fractions.
If a sample of 7 sprockets is selected, find the probability that all in the sample are defective.
Answer by ikleyn(52884) About Me  (Show Source):
You can put this solution on YOUR website!
.

    P =  = 5040%2F57657600%0D%0A = 1%2F11440%29 = 8.74126E-05.   ANSWER


    Or,  another formula  is possible  P = 1%2FC%5B16%5D%5E7,  which gives the same probability.

Solved.