Introduction to Hypothesis Testing
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چکیده
Statistical Hypothesis • Null hypothesis (H0): Hypothesis of no difference or no relation (or not guilty) and often has =, ≥, or ≤ notation in the mathematical statement of the hypothesis. A theory about the values of one (or more) population parameter(s). The theory generally represents the status quo, which we accept until it is proven false. Example: H0: μ = 98.6F (average body temperature is 98.6) • Alternative hypothesis (Ha): Usually corresponds to research hypothesis and opposite to null hypothesis, (or guilty) and has >, < or ≠ notation in the mathematical statement of the hypothesis. We accept this hypothesis only when sufficient evidence exists to support it. Example: Ha: μ < 98.6F (average body temperature is less than 98.6)
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