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Chapter 11: Confidence Intervals – Large Samples
Figure 11- 12:
Workbook Output with the Confidence Interval
for
Example 11-8
Observe that the 98% confidence interval for the average weight of the
backpacks for the population, based on this sample, will be between 13.7455
pounds to 16.7045 pounds, to four decimal places.
Sample Size needed to Estimate a Population Mean
In considering large sample confidence intervals for the population mean,
when the population standard deviation is known, the error of estimate is
given by
Click here for the Large Sample Confidence Interval for a Single Population Mean Workbook