MATH 1P98 Lecture Notes - Lecture 22: Type I And Type Ii Errors, Null Hypothesis, Statistical Hypothesis Testing

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The dean of a business school claims that the starting annual salary of a fresh graduate is ,000. Hint: null hypothesis can be true or false (reject or fail to reject) Type i error and type ii error based on the result of h0 and your decision. I claim that the class average is 60 for test 1. This statement is t. if you say that this is f, you are making type i error. I claim that the class avg for test 1 is not 80. If you say that the class avg is 80, you are making type ii error. Level of significance ( is generally equal to 0. 05; 0. 01; 0. 1) Critical value: the value coressponding with level of significance (shown as blue points) The value/test statistic is in the rejecting region, it fails to reject (e. g. point a) The value/test statistic is not in the rejecting region, it rejects (e. g. point b)

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