Suppose I am a stock analyst and I wish to prove that the ABC co’s avg/mean stock returns are statistically equal to the returns of the stock index. Wouldn’t my alternate hypothesis be ABC’s return = Index return.
However I had an understanding that null hypothesis must contain the = sign and its the opposite of what I am trying to prove. How to make sense with this rule here?
So this means in reality we may have equal to sign with Ha as well if this is what i am trying to prove? Just for CFA we assume equal to sign only with H0.