Chapter PIII, Problem 29RE

(a)

To determine

To find: that there is an equal chance of generating every telephone number that could take place in that society.

Explanation of Solution

Yes, since telephone numbers are created randomly, any telephone number to take place in that group has an equal chance of being created. This approach is better than using telephone books since unlisted telephone numbers are often included in those societies that do not actively list telephone numbers might not be better considered in this process.

(b)

To determine

To Explain: This method of obtaining phone numbers results in a simple random sample of local residences.

Explanation of Solution

No. This method of producing telephone numbers did not result in simple random samples of local citizens because the simple random sampling is provides equal opportunity for all residents to pick the survey, but those residents who do not have a telephone are excluded from the survey in this sense of the survey and there is a higher probability that certain residents hold more than 1 telephone numbers.

(c)

To determine

To explain: that this technique produces a local voter SRS.

Explanation of Solution

No. For local residents, this approach does not produce simple random sampling since individuals who respond to the survey could be of the desired age but not registered as voting. If any voters are approached by researchers, they may not be involved in voting.

(d)

To determine

To Explain: that this is unbiased technique in producing sample of households.

Explanation of Solution

This technique is not impartial in producing household samples because when the phone call was made, household and that someone answered by the phone might be more probable to have someone at home. The behaviour of households toward homecoming might not always be the same as the attitudes of the population at large.