Consider a data sample consisting of 12 values with a mean of 22 and standard deviation of 1.5. What is the approximate 95% confidence interval for the standard deviation?
A) 0.75 < σ < 4.32
B) 0.87 < σ < 2.08
C) 1.06 < σ < 2.55
D) 1.03 < σ < 8.26
Correct Answer:
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