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Explore teaching strategies to help students succeed on the ACT® math test using TI technology.
Students calculate a confidence interval using the chi-square distribution to estimate a population variance.
Students review the chi-square distribution and discuss how the non-symmetric distribution requires them to find two critical values when calculating a confidence interval that estimates the population variance.
Then students are to calculate the 95% confidence interval for the population variance given the standard deviation of a random sample.
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