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Hypothesis testing, part ii perform the five steps in hypothesis testing with one- and two-tailed z tests perform the five steps in hypothesis testing with one- and two-tailed t tests.
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Hypothesis testing is about working out how likely our predictions are hypotheses the null hypothesis , denoted by h 0 , is a prediction about a parameter (so if we are dealing with a normal distribution, we might predict the mean or the variance of the distribution.
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