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Ryan, Engineer
Category: Calculus and Above
Satisfied Customers: 9060
Experience:  B.S. in Civil Engineering
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Use the given degree of confidence and sample data to find a

Customer Question

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
Submitted: 1 year ago.
Category: Calculus and Above
Expert:  Ryan replied 1 year ago.


Thank you for using the site. I'll be happy to help you with this problem. I'll have the solution posted for you in just a minute or two.


Expert:  Ryan replied 1 year ago.

Hi again,

The solution is C) $559 < σ < $1953

Please feel free to ask if you have any questions about this solution.