Practice Quiz

Lean Bronze

Category - Continuous Improvement

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Which of the following descriptors is correct for confidence intervals of a sample size?
  1. The width of the confidence interval increases as the population size decreases.
  2. The width of the confidence interval increases as the population sample size increases.
  3. A 90% confidence level will be wider than a 95% confidence interval.
  4. The width of the confidence interval decreases as the sample size increases.
Explanation
Answer: D - The width of the confidence interval decreases as the sample size increases is the correct descriptor for confidence intervals of a sample size. It provides the confidence level, as well as the margin of error.
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