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What is power function in statistics?
In statistics, we have to test the hypothesis i.e., null hypothesis and alternative hypothesis. In testing, most of the time we reject the null hypothesis, then using this power function result, then tell what is the probability to reject null hypothesis...
What is an alternative hypothesis?
with the alternative hypothesis the reasearcher is predicting
What is a statistical hypothesis?
I think you are asking: What is hypothesis testing in the field of statistics. See: http://en.wikipedia.org/wiki/Statistical_hypothesis_testing
What is inferential data?
There is no inferential data. There is inferential statistics which from samples, you infer or draw a conclusion about the population. Hypothesis testing is an example of inferential statistics.
When the null hypothesis is true then the t statistics will have an average value of?
There can be no proper answer since it is not known whether the alternative hypothesis is one sides or two sided.
