MGEB12H3 Study Guide - Midterm Guide: Type I And Type Ii Errors, Statistical Parameter, Confidence Interval

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How can i identify which is the null which is the alternative: Answer: there are several ways to identify the null and the alternative: Conceptual methods of identifying the null and the alternative: the null is the status quo (what has been the case), the alternative is the departure from the status quo. Mechanical methods in identifying the null and the alternative: the null has = sign while the alternative never has = sign. Therefore, statements that include at least or at most , or equal are identifying the null while statements include, less, or different are identifying the alternative. Example-1: there is a claim that at least 25% of students achieve a in mgeb12: (h0: p 0. 25, h1: p < 0. 25) which we can (and will most often) write as (h0: p = 0. 25, h1: p < 0. 25) Example-2: an adoption of a new teaching method at utsc has increased the average mark beyond historical average of 70.

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