Answer:
D. all of the above
Explanation:
Choosing an appropriate sample size depends on all of the above factors.
For example, if we want a sample with a high level of confidence, for a population that is very diverse (high variability), and we want the sample to have a very low margin of error, we would need a large sample, in order to make the sample as close as possible to the population as a whole.
A. Republicans & amp; Democrats
Answer:
that would be volunteer bias because that would negatively affect our study.
I believe the answer is: somewhat more
When a person make a public virginity-until-marriage pledge, they tend to be more likely to feel some sort of social pressure to follow on their words in fear of being seen as a hypocrites by other peers. This would indeed improve their likelihood to stay a virgin, But the effect of the social pressure tend to diminish over time
