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please help with this homework practice problem, thank you! A sample of 20 items provides a sample standard deviation of 10. 3. Compute the 90%

please help with this homework practice problem, thank you!

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A sample of 20 items provides a sample standard deviation of 10. 3. Compute the 90% condence interval estimate of the population variance (to 2 decimals). 5025 b. Compute the 95% condence interval estimate of the population variance (to 2 decimals). 5025 c. Compute the 95% confidence interval estimate of the population standard deviation (to 1 decimal). SOS

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