(1) Suppose you selected 200 different samples from a large population and used each sample to construct a
0.95 confidence interval estimate for the population mean. How many of the 200 confidence interval
estimates should you expect to actually contain the population mean ??
(2) Discuss the difference between a point estimate for a parameter and an interval estimate for a parameter.
(3) Explain why there needs to be a balance between n, 1 – ?, and E.
(4) Does decreasing the sample size increase or decrease the width of the confidence interval for a particular
parameter (all other things remaining the same)?
(5) Explain why studies involving identical twins result in dependent samples of data.
(6) Describe how one could select two independent samples from among his/her co-workers to compare the
salaries of female and male workers.
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