hi beta = 39/1164 (3%)
hi alpha = 197/1164 = 16.9%
low alpha = 295/1164 = 25.3%
hi alpha
xfold = 5.198
obs = 32
hi beta
xfold = 5.168
obs = 47
p < 0
low alpha
obs = 19
xfold = 5.1747