You have been contracted by the Office of Continuing Education to construct a sample in order to determine reaction to a public service announcement on your universitys night courses. The announcement is intended to attract more adults into night classes. What publicly available information do you think you would you need to carry out the following? Assume that this information is available.

a. Design a simple random sample. Identify your population and sample frame. Recommend a sample size and justify it. Give specific directions on how members of the sample would be selected.

b. Design a systematic sample. Identify your population and sample frame. Recommend a sample size, indicate the skip interval, and select the first 10 members of your sample.

c. Design a cluster sample. Identify your population and sample frame. Recommend a sample size. Give specific directions on how members of the sample would be selected.

d. For all three samples, discuss the adequacy of the sample frame.

e. What sampling design would you recommend? Explain why.