Amarketing 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 145 phone numbers from the caldwell phone book and calls each household. only 24 of those called are willing to participate in the survey, and 13 participants would support a new downtown restaurant. (a) the chance that all 145 phone numbers chosen are located in one particular neighborhood in caldwell is a. reasonably large due to the ''cluster'' effect. b. 145 divided by the size of the population of caldwell. c. exactly 0. simple random sampling will spread out the locations of the phone numbers selected. d. the same as for any other set of 145 phone numbers. e. none of the above. (b) the sample in this survey is a. all residents of caldwell. b. the 24 households that participated in the study. c. the 145 phone numbers chosen. d. all households in the caldwell phone book. e. none of the above. (c) the population of interest is a. all residents of caldwell. b. all households in the caldwell phone book. c. the 145 phone numbers chosen. d. the 24 households that participated in the study. e. none of the above.