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2.What is the age distribution of patients who make office visits to a doctor or nurse? The following table is based on information taken from a medical journal.
| Age group, years | Under 15 | 15-24 | 25-44 | 45-64 | 65 and older |
| Percent of office visitors | 15% | 5% | 20% | 15% | 45% |
Suppose you are a district manager of a health management organization (HMO) that is monitoring the office of a local doctor or nurse in general family practice. This morning the office you are monitoring has eight office visits on the schedule. What is the probability of the following?

