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.

Weights of men: 90% confidence; n = 14, [tex]\frac{}{x}[/tex] = 161.0 lb, s = 10.9 lb

8.1 lb < σ < 15.3 lb
8.3 lb < σ < 16.2 lb
8.8 lb < σ < 2.7 lb
8.6 lb < σ < 14.1 lb

Show work. Ignore the question marks.