Practice question · Fill in the blanks
Complete the correct reading of a confidence level.
A confidence level of 95% is a property of ______.
Word bank: the procedure that generates the intervals · this one particular interval · the true population parameter · the size of the sample
Hints
- Ask which of the parameter and the interval is fixed and which varies across samples.
- The 95% describes what happens if the whole sampling exercise is repeated many times.
Show the answer
A confidence level of 95% is a property of the procedure that generates the intervals.
Why
The parameter is fixed; the interval is what changes from sample to sample. So 95% describes the long-run capture rate of the method, not a probability attached to the one interval you happen to have computed.
Practise Confidence Intervals and Estimation
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