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Use the given degree of...

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, = $3959, s = $886

$539 < σ < $1734

$559 < σ < $1953

$697 < σ < $1156

$598 < σ < $1697

College students' annual earnings: 98% confidence; n = 9, = $3959, s = $886

$539 < σ < $1734

$559 < σ < $1953

$697 < σ < $1156

$598 < σ < $1697

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