I need help with this STAT problem in the screenshot below:

[3pm] It is fall 2014, and you are a freshman at college. A professor asks you to do a statistical study about the attitude of your very large freshman class concerning a campus issue. He wants you to present him with a condence Interval regarding this issue. Rank in the requested order the concerns you would have from among: A- whether your samples are truly random or not MOST important: a B- the number of random samples you decide to use (2- the Sig of your random samples 2"" MOST: o LEAST :6 a} On the standard normal distribution, ndCsothath-C