Question

You are the operations manager for an airline and you are considering a higher fare level for passengers in aisle seats. How many randomly selected air passengers must you survey? Assume that you want to be 99% confident 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. (Round up to the nearest Integer.) b. Assume that a prior survey suggests that about 33% of air passengers prefer an aisle seat. (Round up to the nearest Integer) Enter your antiwar in each of the answer boxes. • Previous MacBook Pro W/ RITY UT0 Pili

Answer 1

solution : - Given margin of error CE) = 0.015 . Assume (p = 0.5 At level 121 is g9% confidence 2 = l-ggy. a = 1-o.gg 2= 0.01 2122 0.01/2 42 = 0.005 2212= 20.005 = 2.576) sample size (n) = (2212) ² x Ê (1-83 2.576 12 x 0.5 (1-0.5) 0.015 sumple size (n) = 7373 P = 0.33. sample size (n) = (22/2 ) x Å (1-P) 12.576 12 x 0.33 (1-0.33) 00015 Sample size(n)= 65211