A collage statistics classconducted a survey concerning community celebration. t

Question

A collage statistics classconducted a survey concerning community celebration. the survery drew its sample in the following manner. Telephone numbers were generated at rendom by selecting one of the local telephone exchanges (first three digits)at random and then generateing a random four -digit number to follow the exchange. if a person answered the phoneand call was to a resident . then the perosn was taken to be the subject for interviw. ( undergraduate students and those under voting age wer excluded. as was anyone who colud not speakEnglish.)Calls were placed under a sample of 200 eligiable respondents had been reacch. a)Did this method generate telephone numberthat could occur in the community have an equal chance of being generated? .b) Did this method of generating lelephone numbers in a sample random sample (SRS) of local residences?.Explain. c) Is this method unbaised in generating samples of households?. Explain.

Explanation / Answer

a)Yes,every telephone number that could occur in that community had an equal chance of being generated because they were selected at random.

b)No,this method didnt generate an SRS of local voters because residences without phones were excluded.Residences with more than one phone per household had a higher chance.

c)No,this method did not generate an SRS of local voters because of those that answer the phone,some may be of age but not registered to vote.

d)No,this method in generating samples of household is bias.It is not an appropriate representation of all households.

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