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Confidence interval for the population mean.

The number of pups in wolf dens of the south-western United States is recorded below for 16 wolf dens.

 

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 the sample standard deviation s = 1.78 pups.

(b) Find a 75 percent confidence interval for the population mean number of wolf pups per den in the south-western United States.

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M920154

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