In: Statistics and Probability
In a sample of 331 Americans, 15% decided to not go to college do so because they cannot afford it.
(a) Suppose we wanted the margin of error for the 90% confidence level to be at most 1.5%. How large of a survey would you recommend? (Do not use the estimate of p given by the sample.)
(b) Suppose we wanted the margin of error for the 90% confidence level to be at most 1.5%. How large of a survey would you recommend? (Now make the estimate that p≈0.15 .)