Education Technology

Statistics: Estimating a Population Proportion

by Texas Instruments

Overview

Students find the confidence interval for a population proportion by first finding the critical value and the margin of error.

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Key Steps

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    In Problem 1, students are to find the critical value, the margin of error, and the intervals at both the 95% and 99% level. Critical values are found by using the invNorm command to find the area to the left of that value.