SOLUTION: a sample of 4 calculators is randomly selected from a group containing 44 that are defective and 23 that have no defects. what is the probability that all four of the calculators s
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Question 1056870: a sample of 4 calculators is randomly selected from a group containing 44 that are defective and 23 that have no defects. what is the probability that all four of the calculators selected are defective? Answer by rothauserc(4718) (Show Source):
You can put this solution on YOUR website! There are a total of 44 + 23 = 67 calculators
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The probability that the first calculator chosen is defective is 44/67, second defective chosen is 43/66, third is 42/65 and fourth is 41/64
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probability that all four are defective is 44/67 * 43/66 * 42/65 * 41/64 = approximately 0.1771
