Final answer:
Without additional details, it is impossible to determine how many cases the customer has left on their entitlement. The question needs more specific information about the customer's entitlement plan. For the additional exercises, the average time for three customers to arrive would be six minutes, and the probability calculations for Santa Clara County disease cases would use given percentages.
Step-by-step explanation:
The question does not provide enough information about the entitlement policy or how many cases the customer is allowed to have within a calendar year. Therefore, to determine how many cases the customer has left on their entitlement, additional details regarding the customer's case limit or entitlement plan would be necessary.
For the provided exercises:
- b. Since one customer arrives every two minutes on average, it will take six minutes on average for three customers to arrive.
Regarding the salespersons' car sales question, the exercise seems to request calculations of a statistical nature, like probably finding the mean or expected value.
For Santa Clara County disease cases:
- Find P(Person is female).
- Find P(Person obtained the disease through method C).
- Find P(Person is female GIVEN person got the disease from method C).
These calculations would use the basic probability rules and the given percentages.