A simple random sample of: 8 reaction times of NASCAR drivers is selected. The reaction times: have a normal distribution. The sample mean is: 1.24 sec with a standard deviation of 0.12 sec. Construct a 99% confidence: interval for the population standard deviation.

0.20 < [tex]\alpha[/tex] < 0.92
0.73 < [tex]\alpha[/tex] < 3.30
0.08 < [tex]\alpha[/tex] < 0.22
0.07 < [tex]\alpha[/tex] < 0.32

Show work. Ignore the colons.