(3 points) A marketing research firm wishes to determine if the residents of Cal

Question

(3 points) A marketing research firm wishes to determine if the residents of Caldwell, Idaho, would be interested in a new downtown restaurant. The firm selects a simple random sample of 120 phone numbers from the Caldwell phone book and calls each household. Only 36 of those called are willing to participate in the survey, and 28 participants would support a new downtown restaurant. (a) The sample in this survey is A. the 120 phone numbers chosen. B. the 36 households that participated in the study. C. all residents of Caldwell D. all households in the Caldwell phone book. E. None of the above. (b) The population of interest is A. all residents of Caldwell. B. the 120 phone numbers chosen. C.the 36 households that participated in the study. D. all households in the Caldwell phone book. E. None of the above. (c) The chance that all 120 phone numbers chosen are located in one particular neighborhood in Caldwell is 0 A, the same as for any other set of 120 phone numbers. B. reasonably large due to the "cluster" effect. ·c. exactly 0. Simple random sampling will spread out the locations of the phone numbers selected. D. 120 divided by the size of the population of Caldwell E. None of the above

Explanation / Answer

a) answer is A) Sample of 120 phone numbers chosen

b) answer is A) because sample is chosen from all residents of caldwell

c) Answer is C)

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