A manufacturer of agricultural vehicles wants to test the potential demand for a new range of tractors being assembled in the country from imported parts. Their new tractor range is aimed at the small to medium-sized farmers and can be purchased with a range of up to 10 separate attachments and trailers for different kinds of work. The manufacturer would like to sample likely users.

a. Identify the population and sampling frame that could be used.

b. Describe how a simple random sample can be drawn using the identified sampling frame.

c. Could a stratified sample be used? If so, how?

d. Could a cluster sample be used? If so, how?

e. What sampling technique would you recommend, and why?