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

question 46

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 12.2 feet.

• A) 11.2 < < 13.2
• B) 8.5 < < 21.4
• C) 137.8 < < 159.8
• D) 72.7 < < 458.4

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Definitions:

Ossification

The process by which bone is formed, renewed, and repaired in the body.

Cranium

The part of the skull that encloses the brain.

Uric Acid

A chemical created when the body breaks down substances called purines, excessive amounts of which can lead to gout and kidney stones.

Osteons

Structural units within compact bone tissue, consisting of concentric layers of calcified matrix.