Use the Given Degree of Confidence and Sample Data to Find

question 128

Multiple Choice

Use the given degree of confidence and sample data to find a confidence interval for the population standard deviation ?.
Assume that the population has a normal distribution. Round the confidence interval limits to the same number of decimal places as the sample standard deviation.
-College students' annual earnings: $98 \%$ confidence; $\mathrm { n } = 9 , \overline { \mathrm { x } } = \$ 3705 , \mathrm {~s} = \$ 841$

• A) \(\$ 511 < \sigma < \$ 1646\)
• B) \(\$ 531 < \sigma < \$ 1854\)
• C) \(\$ 568 < \sigma < \$ 1611\)
• D) \(\$ 662 < \sigma < \$ 1097\)