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MATH 1401: Elementary Statistics (TI Calculator and Free Websites)

Confidence Intervals (Zintervals)

 Confidence Intervals

This sub-module will introduce you to confidence intervals. The most important point of this lesson is showing how to make confidence intervals when the population standard deviation is known. 


Example of a Confidence Interval

Confidence Interval with Known Standard of Deviation

Alpha CL and Two tails

Example of CI by hand calculator and website

Finding EBM and Sample Mean for CI

Example 1 of Z interval

Flow chart of Z interval

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