A simple random sample of 1200 adult Americans is selected and each person is as

Question

A simple random sample of 1200 adult Americans is selected and each person is asked the following question . "In light of the huge fiscal problems facing our society, should the government at this time spend additional money to establish a national system of health insurance?" Only 39% of those responding answered yes. This survey A) is reasonably accurate because it used a large, simple random sample B) probably overstates the percentage of people that favor a system of national health nsurance. C) probably understates the percentage of people that favor a system of national healti D) is very inaccurate, but neither understates nor overstates the percentage of people nsurance. that favor a system of national health insurance. Because simple random sampling was used, it is unbiased In order to take a sample of 90 members of a local gym, I first divide the members into men and women, and then take a simple random sample of 45 men and a separate simpl random sample of 45 women. This is an example of a A) block design B) stratified random sample. C) double blind simple random sample. e following to answer question 26: e people who suffer from chronic fatigue syndrome volunteer to take part in an experimer if shark fin extract will increase one's energy level. Eight of the volunteers are men and e women. Half of the volunteers are to be given shark fin extract twice a day and the oth lacebo twice a day. We wish to make sure that four men and two women are assigned t f the treatments, so we decide to use a block design with the men forming one block and men the other. Suppose one of the researchers is responsibl for determining if

Explanation / Answer

Solution:-
24. option c) probably understates the percentage of people that favor a system of national health insurance.

25. option B) stratified random sample.

26. option D) Conduct the study as a double-blind experiment.

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