July 2012
Intermediate to advanced
400 pages
9h 33m
English
Content preview from Statistical Inference: A Short Course12.6 Confidence Intervals for
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12.6 Confidence Intervals for 
and 
To determine how precisely 
and 
have been estimated from the sample data, let us find 100(1 − α)% confidence intervals for these parameters. To this end:
is
where − 
and 
are, respectively, the lower and upper percentage points of the t distribution and 1 − α is the confidence coefficient. Hence Equation (12.21) informs us that we may be 100(1 − α)% confident ...
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