4.33 Online courses in high schools? What do adults believe about requiring online courses in high schools? Are opinions different in urban, suburban, and rural areas? To find out, researchers wanted to ask adults this question:

It has become common for education courses after high school to be taken online. In your opinion, should public high schools in your community require every student to take at least one course online while in high school?

Because most people live in heavily populated urban and suburban areas, an SRS might contain few rural adults. Moreover, it is too expensive to choose people at random from a large region. We should start by choosing school districts rather than people. Describe a suitable sample design for this study, and explain the reasoning behind your choice of design.