The interpretation of a confidence interval estimate of a population average is identical to the interpretation of a confidence interval estimate for a population percentage.

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The interpretation of a confidence interval estimate for a population average is that if the same population is sampled repeatedly and a confidence interval is calculated each time, the proportion of the intervals that contain the true population average will match the confidence level used. The interpretation of a confidence interval estimate for a population percentage is similar, except that it pertains to the proportion of individuals in the population with a certain characteristic rather than an average value.

The Interpretation of a Confidence Interval Estimate of a Population