Answer:
The population is all the adult men who are 40 to 60 years of age and live in the United Stades.
Step-by-step explanation:
The population is all the adult men who are 40 to 60 years of age and live in the United Stades.
The 1338 are the sample, and the study wants to find the proportion of all these adults who had seen their family doctor. Since 1338 is a large sample size, this proportion can be extended to all the adult men who are 40 to 60 years of age and live in the United Stades.