[See Solution] Lifetimes of Snowmobiles A random sample of 15 snowmobiles was selected, and the lifetime (in months) of the batteries was measured. The variance
Question: Lifetimes of Snowmobiles A random sample of 15 snowmobiles was selected, and the lifetime (in months) of the batteries was measured. The variance of the sample was 8.6. Find the \(90 \%\) confidence interval of the true variance.
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