Thank you for the opportunity to help you with your question!
the concept of null hypothesis usually refers to a general statement or default position that there can never be a relationship between two measured phenomena and there is no difference among the groups. it is often denoted H0 (read “H-naught”, "H-null", or "H-zero").
The alternative hypothesis, H1, is a statement of what a statistical hypothesis test is set up to establish.
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Nov 10th, 2015
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