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    Confidence interval and chi square hypothesis test for variance

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    A random sample of 10 observations has been drawn from a normal population, and the sample variance is found to be s^2 = 19.5. Determine the 98% confidence interval for ^2

    A random sample of n = 12 is drawn from a population that is normally distributed, and the sample variance is s^2 = 19.3. Use  = 0.025 in testing H0: ^2 = 29.0 versus H1: ^2 ≤ 9.4 versus H1: ^2 > 9.4

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    A random sample of 10 observations has been drawn from a normal population, and the sample variance is found to be s^2 = 19.5. Determine the 98% confidence ...

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    The solution determines a confidence interval and chi square hypothesis test for variance.

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