i'm getting my concepts very confused now...(adsbygoogle = window.adsbygoogle || []).push({});

so the formula for the normal distri is (y - u)/(sigma)/((sqroot(n)).

so if I want to test y, I set that formula = to alpha(where alpha is the confidence level).

that is if it is one sided. if it is 2 sided, do I still set it to alpha, or alpha/2?

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# Homework Help: Question about hypothesis testing

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