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Help with Statistics problem - confidence intervals? Check my answer?
In a random sample of 14 home theater systems, a sample standard deviation for the price was $123. Assuming that the population is normally distributed, construct a 95% confidence interval for the population variance and the population standard deviation.
I've already worked it out but I feel like my answers are way too high. I don't know what I'm doing wrong since I'm using the formulas the book gave me.
For variance I got: (7951.0, 39264.7)
For deviation I got: (89.2, 198.2)