a. The sample is the 10 adults that the Newsweek reporter asked about their opinion of the current president. Whether the sample is likely to be representative of the population depends on the specific characteristics of the adults on that street corner. If the street corner is in a diverse area and the reporter approaches a representative sample of adults, then the sample may be considered representative. However, if the street corner is in a specific neighborhood or if the adults approached are not a random selection, then the sample may not be representative.
b. The population is all households with TV sets in use. The sample is the 5000 randomly selected households that were surveyed. Since the households were randomly selected, the sample is likely to be representative of the population.
c. The population is all adults. The sample is the 1059 randomly selected adults surveyed in the Gallup poll. Since the adults were randomly selected, the sample is likely to be representative of the population.
d. The population is all adult Americans. The sample is the 500 adults that the graduate student mailed the survey to. Since the sample is not randomly selected and is based on the adults that the student knows, it is unlikely to be representative of the population.
dentify the (a) sample and (b) population. Also determine whether the sample is likely to be representative of the population. a. A reporter for Newsweek stands on a street corner and asks 10 adults if they feel that the current president is doing a good job. b. Nielson Media Research surveys 5000 randomly selected households and finds that among the TV sets in use, 19% are tuned to 60 Minutes (based on data from USA Today). c. In a Gallup poll of 1059 randomly selected adults, 39% answered yes when asked Do you have a gun in your home? d. A graduate student at the University of Newport conducts a research project about how adult Americans communicate. She begins with a survey mailed to 500 of the adults that she knows. She asks them to mail back a response to this question: Do you prefer to use e-mail or snail mail (the US Postal Service)? She gets back 65 responses, with 42 of them indicating a preference for snail mail.
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