We want to estimate the probability of a student passing Exam 4 (that's this one). If a 99% confidence interval is to be constructed for the true proportion of passing, so that the population probability is within
5 % of the sample probability, how large must our sample be?

Which is an accurate comparison of the two data sets? the commute to work is typically shorter and more consistent than the commute home. the commute to work is typically shorter but less consistent than the commute home. the commute to work is typically longer and less consistent than the commute home. the commute to work is typically longer but more consistent than the commute home.