Two Independent samples' Standard deviations hypothesis test (2-Samp F-Test)
Samples must be from normal populations. And independent.
H0: samples from populations with same standard deviations: σ1=σ2
Weights:
63 88.9 71.1 83.6 84.2 76.3 69.5 74.4 81.4 72 85.5 111.1
90.8 86.1 101.1 76.9 63 98.4 83.5 65.1 111.5 78
Errors
w/alcohol n=22 s=2.2
w/o " n=22 s= .72