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    Confidence interval for population variance

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    A random sample of size 9 of a random variable X gave a variance of 3.0. Find a 95% confidence interval for the population variance, assuming that X is normally distributed.

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    Please see attached file.

    This is a question for estimation of population variance. So we use the Chi-Square ...

    Solution Summary

    The expert analyzes the confidence interval for population variances. Normally distributed functions are given.