Question

1. as part of a study by a certain medical association, hospital administrators and doctors will be asked about the new standards of care for elderly patients. from the 270,000 members, a random sample of 400 administrators and 800 doctors was selected. of the 1200 members selected, 1100 members indicated they were familiar with the new standards. what are the population and the sample in this study? a) the population is the 1200 members who were selected, and the sample is the 1100 members who indicated they were aware of the new standards. b) the population is the 1200 members who were selected, and the sample is whether or not each member is familiar with the new standards c) the population is the 270,000 members, and the sample is whether or not each member is aware of the new standards. d) the population is the 270,000 members, and the sample is the 1200 who were selected. e) the population is the 270,000 members, and the sample is the 1100 members who are familiar with the new standards. 8. in which of the following situations would it be most difficult to conduct a census? a) to determine what proportion of post office boxes are available for renting in the local post office b) to determine what proportion of students in a high school participate in athletics c) to determine what proportion of registered voters actually voted in the most recent school board election d) to determine what proportion of licensed drivers in a small town own electric vehicles e) to determine what proportion of deer in a state are female

Explanation:

• For Question 7:
• The population is the entire group of interest. Here, the study is about the members of the medical association, so the population is the 270,000 members.
• A sample is a subset of the population selected for study. The 1200 members (400 administrators and 800 doctors) who were selected form the sample.
• For Question 8:
• A census involves collecting data from every individual in the population.
• Deer in a state are mobile, spread out over a large area (forests, fields etc.), and difficult to count individually. In contrast, post - office boxes, high - school students, registered voters in a school board election (assuming a local school board), and licensed drivers in a small town are more accessible and easier to count compared to deer in a state.

Answer:

1. D. The population is the 270,000 members, and the sample is the 1200 who were selected.
2. E. To determine what proportion of deer in a state are female.