Final answer:
According to AATB standards, a comprehensive internal audit must be done annually. In a 20-year period, there would be 20 audits. The correct answer is option b.
Step-by-step explanation:
A comprehensive internal audit must be done annually according to AATB (American Association of Tissue Banks) standards. This means that the audit is conducted once every year to ensure compliance with quality and safety standards.
In a 20-year period, there would be 20 audits since a comprehensive internal audit is done once per year. To find the probability that a person is not audited at all, we need to divide the number of years without an audit by the total number of years.
If we assume that the probability of being audited in a year is 1, then the probability of not being audited at all in a 20-year period is 0, since there are no years without an audit. To find the probability that a person is audited more than twice, we need to add up the probabilities of being audited three times, four times, and so on.