Question

The data sets represent simple random samples from a population whose mean is 100.
(a) Compute the sample mean of each data set.
(b) For each data set, construct a 95% confidence interval about the population mean.
(c) What effect does the sample size n have on the width of the interval? For parts (d)–(e), suppose that the data value 106 was accidentally recorded as 016.
(d) For each data set, construct a 95% confidence interval about the population mean using the incorrectly entered data.
(e) Which intervals, if any, still capture the population mean, 100? What concept does this illustrate?


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  • CreatedApril 28, 2015
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