Find the 95% Confidence Interval for the Variance of the Heights

question 83

Multiple Choice

Find the 95% confidence interval for the variance of the heights of maple trees if a sample of 11 trees has a standard deviation of 10.2 feet.

• A) \(93.0 < \sigma ^ { 2 } < 115.0\)
• B) \(7.1 < \sigma ^ { 2 } < 17.9\)
• C) \(9.2 < \sigma ^ { 2 } < 11.2\)
• D) \(50.8 < \sigma ^ { 2 } < 320.4\)

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