Hypothesis Testing

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  • The method followed for inferring the difference between a population parameter and an external standard for the parameter, using a statistic from a random sample, or when we want to infer population parameter differences based on the comparison of sample statistic differences from random samples. There are two complementary hypotheses: (1) the null hypothesis, which represents no difference, and (2) the research hypothesis, which represents a difference. Hypothesis testing is the method used to decide which of the two hypotheses believed to be true. Statistical tests assess the viability of the null hypothesis. If the null is rejected, that is indirect support for the viability of the research hypothesis. Rejection of the null is based on the value of the probability that the observed or ...

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