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We make a claim and we test it:
We state a null hypothesis, H
0
(We assume that H
0
is true)
How much evidence do we need before rejecting H
0
?
(Level of significance)
We collect the sample
How far is our sample from the null?
We calculate a test statistics = measure the distance of our sample from the null
What is the probability of obtaining this score if H
0
is true?
We obtain a p value for the test statistics
We make a
decision to accept or reject
the null hypothesis based on the p value
BASIC REVIEW: STATISTICAL
TESTING