I'll put my answer is the comments when I know what I'm looking for. I just need the power.
Answer:
the population is everyone at the airport ,the sample is the 50 people that walked by Elizabeth
5/8 I believe. You can divide both by 9
That is permuations
that would be 10! or 10*9*8*7*6*5*4*3*2*1=3628800 ways