To Study Frequency of Intercourse After Age 65, the Publishers

Multiple Choice

To study frequency of intercourse after age 65, the publishers of 65 Plus magazine include a survey in their January issue; 25% of the subscribers return the survey. What should the publishers tell their readers about this survey?

A) The results can be generalized to the complete readership of 65 Plus.
B) The results cannot be generalized to the adult population over 65.
C) The response rate was high enough to represent the adult population over age 65.
D) The sample can be adjusted so that it represents a random sample of adults over age 65.