A sample of 4 different calculators is randomly selected from a group containing 19 that are defective and 36 that have no defec ts. what is the probability that at least one of the 4 calculators in the sample is defective?
1 answer:
<span><span>The probability of all calculators having no defects is 16.8%. The probability of at least one defect is the complement of that probability.
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