Go to a local library; collect a sample of books consisting of the ages of book

Question

Go to a local library; collect a sample of books consisting of the ages of book (based on copyright dates). Plan and describe the sampling procedure, then use the results to construct a confidence interval estimate of the mean age of all books in the library.Go to a local library; collect a sample of books consisting of the ages of book (based on copyright dates). Plan and describe the sampling procedure, then use the results to construct a confidence interval estimate of the mean age of all books in the library.

Explanation / Answer

To collect a sample of books consisting of the ages of book (based on copyright dates) the researcher should use stratified ssampling. Stratified sampling is a technique of sampling which involves the division of a population into smaller groups known as strata. In stratified sampling, the strata are formed based on members' shared characteristics.

Now, find the sample mean. Since, the population mean is unknown use t to obtain the desired confidence interval.

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