These questions concern how to collect a random sample of 800 airline passengers from 100 particular flights leaving San Francisco International Airport. Assume there are 200 passengers aboard each flight.
1.Describe how to draw the sample as a stratified random sample, using the 100 flights as the strata.
2.Describe how to draw the sample as a cluster random sample, using flights as the cluster.
3.Describe how to draw the sample as a systematic sample from these flights.