The National Park Service has started charging a user fee to park at selected trailheads and crosscountry ski lots. Some users object to this fee, claiming they already pay taxes for these areas.

The agency has decided to randomly question selected users at fee areas in Colorado to assess the level of concern.

a. Define the population of interest.

b. Assume a sample of 250 is required. Describe the technique you would use to select a sample from the population. Which sampling technique did you suggest?

c. Assume the population of users is 4,000. Use either Minitab or Excel to generate a list of users to be selected for the sample.