An insurance company wants to know the proportion of clients who have had claims within the last year. They randomly select 100 clients from a database of all clients and check their basic information. They find that ________.
1) Yes.
2) No, because it wasn't a random sample.
3) No, because n(p-hat) < 10 or n(q-hat) < 10.
4) No, because the sample size wasn't at least 30 and the population wasn't normally distributed.
5) No, because we already know the population proportion.