To ensure that Joe's sample of 10,000 adults (5,000 males and 5,000 females) is representative of the U.S. population and avoids bias, he should choose the same number of individuals from each of the 50 states.
To calculate the number of adults from each state:
- Divide the total sample size (10,000) by the number of states (50):
\[ \frac{10,000 \text{ adults}}{50 \text{ states}} = 200 \text{ adults per state} \]
Therefore, Joe should choose 200 adults from each state.