I'm learning statistics and having hard times understanding hypothesis.
Suppose we are testing the hypothesis that sugar is linked to obesity. Which will be for what type of hypothesis.
H0: Yes, sugar is linked to obesity and H1: No, sugar is not linked to obesity or
H0: No, sugar is not linked to obesity and H1: Yes, sugar is linked to obesity.
Another example(from an exam):
"Select the hypothesis formulation and the corresponding best values for α, in a Judiciary Scenario so as to avoid punishing an innocent in lieu of which it’s okay to pronounce a real case of guilty as not guilty:"
answer is: H0 : Defendant is Innocent, H1 : Defendant is not Innocent, α = 1%
I'm confused between which condition to select for what hypothesis and also how to select confidence intervals.