7 Identify the sample and the population Also determine whet

7. Identify the sample and the 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.

           Population: ___________________________________________________________

           Sample:   _____________________________________________________________

           Is the sample representative of the population?   YES       NO

           Explain your answer: _____________________________________________________

      b) Nielsen 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).  

           Population: ___________________________________________________________

           Sample:   _____________________________________________________________

           Is the sample representative of the population?   YES       NO

           Explain your answer: _____________________________________________________

Solution

7)

a)

population : adults that are standing on a street corner

sample : 10 adults if they feel that the current

Is the sample representative of the population? NO

because there is a lot of people on the street and you are asking only to 10 adults

b)

population : households

sample : 5000 households

Is the sample representative of the population?   YES   

the sample size is very large enough to do inferences