Use the Given Degree of Confidence and Sample Data to Find

question 73

Multiple Choice

Use the given degree of confidence and sample data to find a confidence interval for the population standard deviation σ.
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; n = 9, $\bar { x }$ = $3361, s = $865

• A) \(\$ 546 < \sigma < \$ 1907\)
• B) \(\$ 584 < \sigma < \$ 1657\)
• C) \(\$ 526 < \sigma < \$ 1693\)
• D) \(\$ 681 < \sigma < \$ 1128\)

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