The effect size is 1.6 sigma; 80 people, 40 in each group, 24 versus 14 improvements. The null hypothesis is by no means ruled out. That’s in addition to the double-blinding problems others have noted.
The effect size is 1.6 sigma; 80 people, 40 in each group, 24 versus 14 improvements. The null hypothesis is by no means ruled out. That’s in addition to the double-blinding problems others have noted.