# 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?

(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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