To compute 85% confidence interval for the population mean.
Wildlife: Wolf pups The number of pups in wolf dens of the southwestern United States is recorded below for 16 wolf dens (The Wolf in the Southwest: The Making of an Endangered Species, edited by D. E. Brown, university of Arizona Press).
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5
|
8
|
7
|
5
|
3
|
4
|
3
|
9
|
|
5
|
8
|
5
|
6
|
5
|
6
|
4
|
7
|
a) Use a calculator with mean and standard deviation keys to verify that the sample mean is
x = 5.63 pups with sample standard deviation s = 1.78 pups.
(b) Compute an 85% confidence interval for the population mean number of wolf pups per den in the southwestern United States.