Answer
Response or nonresponse bias
The direction of bias unknown
The margin of error does not allow for this bias.
Work Step by Step
People might not be willing to reveal any information about their sex life or might not tell the truth when answering these questions.
We cannot guess the direction of the bias, because there could be people who will exaggerate the actual value, but there could also be people who will underestimate the actual value.
The margin of error only includes sampling error and not any other types of bias and thus the margin of error does not allow for this bias.
