Joe wants to find the most common source of news among U.S. adults. He wants his sample to have 10,000 adult (half male and half female individuals) to make a valid generalization. How many people from each of the 50 states should he choose randomly to avoid bias in his study?

In order to avoid bias in Joe's study, he should ensure that each state is represented proportionally in his sample of 10,000 adults. Since he wants to have an equal number of male and female individuals, he should also ensure that there is an equal number of males and females from each state.

Assuming that the population distribution of males and females in each state is generally equal, he should choose 200 individuals from each state (100 males and 100 females) in order to make a valid generalization about the most common source of news among U.S. adults.