11. Multiple-choice questions. (1) Which of the following is an example of a cen

Question

11. Multiple-choice questions. (1) Which of the following is an example of a census? (A) Every fift h persou leaving a supermarket is asked to name his or her favorite brand of peanut utter (B) Each cmployee in a corporation fills out a questiounaire for ) Each cmployee in a corporation fills ont a questiounaire for a management survey. (C) All the students who are at a school on a particular day rate the food in the cafeteria. (D) All the commuters who are dissatisfied with the service of their commuter train company are asked to write a letter of complaint. (2) Which of the following statements are true statements? I. Data gatheredl from a census is always reliable. II. For many studies, a census is too costly and difficult to implement. III. The U.S. Census cannot be considered a complete enumeration of the population. (A) I nnd II (B) l and 111 (C) II and III (D) None of the statenients is true (3) A uarketing company offers to pay $25 to the first 100 persous who respond to their advertisement and complete a questiommaire regarding displays of their client 's product. This situation is an example of which of the following? (A) simple random sample (B) voluntary response sample (C) convenience sample (D) cluster sample (1) You have been given the task of determining if right-handed persons have stronger right hands than left hands. A sample of 10 right-handed persons is selected randomly. Which of the following designs would be most appropriate for this study? (A) a observational study (B) a matched pair blocked experiment in which each subject represents a block wherein the strength of the right hand and left hand is measured in random order (C) five of the subjects are randomly placed in the control group and the other in the treatment group. All are tested and results of cach group are compared (D) None of these is appropriate (5) Which of the following is not a source of bias in sample surveys? ) non-responise (B) wording of questious (C) vohuutay responuse (D) All are sources of bias

Explanation / Answer

(1) Each employee in a corporation fills out a questionnaire for a management survey.

(2) I and II.

(3) voluntary response sample.

(4) Option B is correct.

(5) All are sources of bias.

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