The mean replacement time for a random sample of 12 microwave ovens is 8.6 years with a standard deviation of 3.7 years. Construct the​ 98% confidence interval for the population​ variance, σ2. A. ​(5.744​,42.17​) B. ​(1.646​,13.331​) C. ​(2.468​,7.023​) D. ​(6.091​,49.325​)

MATLAB: An Introduction with Applications
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The mean replacement time for a random sample of 12 microwave ovens is 8.6 years with a standard deviation of 3.7 years. Construct the​ 98% confidence interval for the population​ variance, σ2.

 
A.
​(5.744​,42.17​)
 
B.
​(1.646​,13.331​)
 
C.
​(2.468​,7.023​)
 
D.
​(6.091​,49.325​)
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