I need help with this question for homework, I need to know how to get the answer, so I can follow it for other problems, thank you

You are the operations manager for an airline and you are considering a higherfare level for passengers in aisle seats. How many randomly selected air passengers must you survey? Assume that you want to be 90% condent that the sample percentage is within 1.5 percentage points of the true population percentage. Complete parts (a) and [b] below. a. Assume that nothing is known about the percentage of passengers who prefer aisle seats n = {Round up to the nearest integer.) h. Assume that a prior survey suggests that about 32% of air passengers prefer an aisle seat. n = {Round up to the nearest integer.)