PSYCH 100A Chapter 13: Psych 100A Ch13
Document Summary
Power: probability that a test will correctly reject the null hypothesis (will find that an. Probability that a test will correct support the alternative hypothesis. Type ii error: failing to reject an incorrect null hypothesis. Null is true and we don"t reject it (correct) Null is true but we reject it (type i error) Null is false but we fail to reject it (type ii error) Null is false and we reject (correct) Type ii errors are due to the random nature of samples. If our null hypothesis is false, there are only two possible outcomes, type ii error or correct rejection of the null. = probability of making a type ii error. Real distribution: distribution assuming the specified real value of the parameter. Find the rejection region on the distribution of means. Power is the area under the real distribution that corresponds to the rejection region determined by the null hypothesis. Population raw effect size = real - null.
