SOLUTION: a sample of 4 different calculators is randomly selected from a group containing 36 that are defective and 30 that have no defects. whats is the probability that all 4 of the calcu

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Question 443427: a sample of 4 different calculators is randomly selected from a group containing 36 that are defective and 30 that have no defects. whats is the probability that all 4 of the calculators slected are defective?how do i set this up? Is it (30/66) (29/66)(28/66)(27/66)
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
there are 66C4 ways of selecting 4 calculators

there are 36C4 ways of selecting 4 defective calculators

so the probability of 4 defective is ___ (36C4) / (66C4)