Explain the difference in size between the 90% and 95% confidence intervals: why is one bigger...

Question:

Explain the difference in size between the {eq}90 \% {/eq} and {eq}95 \% {/eq} confidence intervals: why is one bigger than the other?

Confidence Interval

The confidence interval is the interval estimation which has the lower and upper limit. The margin of error is one of the important calculation of confidence interval, and it is half of the confidence width.

Answer and Explanation:

95% has the higher confidence interval

When the other value is constant, the higher confidence level lead to increase the critical value which increase the value of margin of error. The higher margin of error leads to increases the confidence interval.


Learn more about this topic:

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Finding Confidence Intervals with the Normal Distribution

from Statistics 101: Principles of Statistics

Chapter 9 / Lesson 3
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