Determine which sampling method was used in each scenario.
on a particular day 5 flights are selected at random and all of the passengers on these 5 flights are screened.
Airport security uses a random number generator to determine the next passenger to screen.
To determine which sampling method was used in each scenario, let's analyze the given scenarios:
1. "On a particular day 5 flights are selected at random and all of the passengers on these 5 flights are screened."
In this scenario, the sampling method used is Stratified Random Sampling. The flights are selected randomly, but all passengers on the selected flights are screened. This method ensures that representation is obtained from each flight, making it stratified.
2. "Airport security uses a random number generator to determine the next passenger to screen."
In this scenario, the sampling method used is Simple Random Sampling. The random number generator is used to select the passengers randomly for screening without any predetermined criteria or stratification.
In summary:
- Scenario 1: Stratified Random Sampling
- Scenario 2: Simple Random Sampling