I am very confused by this concept. Before doing mock, I thought I knew this perfectly that the positive situation that we want is alternate and what we dont want is Null hypothesis but now i am not sure.
If someone can clarify this and let me know what I am misunderstanding
Null hypothesis is the one we are interested in rejecting, and Alternative hypothesis is the one whose validity we are trying to evaluate.
RazAl is spot on.
Often, which is which depends on our point of view:
A portfolio manager claims that his average annual return is 10%. If he’s a competitor, we choose H0: r ≥ 10%, Ha: r < 10%. If he’s a coworker, we choose H0: r ≤ 10%, Ha: r > 10%.