Chapter CR, Problem 21E

PVA The Paralyzed Veterans of America (PVA) is a Congressionally chartered veterans’ service organization that represents the interests of paralyzed veterans. The agency provides a range of services to veterans who have spinal cord injury or dysfunction. It derives most of its funding from contributions. The data set PVA contains a sample of the donors who recently gave money to the organization. We would like to use the sample to understand the donors in the entire database. The following variables are included:

1. a) Describe the distribution of the donors’ ages, including any unusual features. Give a 95% confidence interval for the mean age of all donors in the database.
2. b) The average age at which people buy homes in the United States is about 34. So, in general, homeowners are older than non-homeowners. Test whether homeowners, on average, are older than non-homeowners in this data set. Explain the discrepancy.
3. c) Are men more likely than women to own homes? Use the data set to test a hypothesis and comment on the result.
4. d) Describe the distribution of Current Gift for these donors.