Question

The statistics of n=22 and s=14.3 result in this? 95% confidence interval estimate of ??: 11< ? <20.4.

That confidence interval can also be expressed as? (11.0, 20.4). Given that 15.7plus or minus±4.7 results in values of 11.0 and? 20.4, can the confidence interval be expressed as 15.7plus or minus±4.7 as? well?

Choose the correct answer below.

A.Yes. In? general, a confidence interval for ? has s at the center.

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

C.Yes. Since the? chi-square distribution is? symmetric, a confidence interval for ? can be expressed as 15.7plus or minus±4.7.

D.Not enough information

Answer #1

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