The statistics of nequals22 and sequals14.3 result in this? 95% confidence inter

Question

The statistics of nequals22 and sequals14.3 result in this? 95% confidence interval estimate of sigma?: 11.0less thansigmaless than20.4. That confidence interval can also be expressed as? (11.0, 20.4). Given that 15.7plus or minus4.7 results in values of 11.0 and? 20.4, can the confidence interval be expressed as 15.7plus or minus4.7 as? well? Choose the correct answer below. A. Yes. Since the? chi-square distribution is? symmetric, a confidence interval for sigma can be expressed as 15.7plus or minus4.7. B. No. The format implies that sequals?15.7, but s is given as 14.3. In? general, a confidence interval for sigma does not have s at the center. C. Yes. In? general, a confidence interval for sigma has s at the center. D. Not enough information

Explanation / Answer

No. The format implies that s equals ?15.7, but s is given as 14.3. In? general, a confidence interval for sigma does not have s at the center.

Option B is correct.

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