Wondering if Fieller's theorem is used for the 'ratio' value in the
compare argument in
statsmodels.stats.proportion.confint_proportions_2indep method from the
statsmodel module. If not, what is it? I'm trying to display the confidence interval of the % difference between p1-p2
Also, how can I interpret the numbers.
I got the following 95% conf intervals with
ratio: (1.05, 1.31).
EDIT: When computing for the risk ratio, the 95%CI is :(1.05, 1.31) What does it mean? Is that that the click through rate for the control group (metric being analyzed) is between 5% and 31% more likely to be clicked than the treatment group ?
Data: P1 = 30.97% n=50000, P2 = 26.34%, n=50050 Delta = -14.9% How can i get the CI for the Delta?