Confidence interval and hypothesis testing


Less is more. Stay pure. Stay poor.
They seem to want you to run a one-sample test against a constant value.

Second question is written a little weird in that they don't say which side they want you to calculate the CI for, you could always just run a 90% CI and which would be correct for either one-sided value and say you did that due to the vagueness of the question.

So, what don't you get about these questions?