PSY201H1 Study Guide - Quiz Guide: Null Hypothesis, Standard Score, Sampling Distribution
Document Summary
Lecture 9 - student"s t-test for single samples. Applying general procedure for testing a null hypothesis. Calculate an appropriate statistic based on your sample"s data, study design, and your hypothesis: sign test: sum of pluses, z test: obtained mean obtained z score, t test: obtained mean obtained t. Choose the appropriate null hypothesis sampling distribution that corresponds to your statistic: sign test: binomial distribution, z test: sampling distribution of the mean (one group and know population mean and. Sd: t test: sampling distribution of t (one group and don"t know population sd, or have two groups) Single sample: compare one group mean to a known population mean when you don"t know sd, compare one group mean to some other null value of interest (e. g. , scale midpoint) Two group: compare two group mean in independent groups experiment, compare two group means in repeated measures experiment. Correlated groups, not independent of each other. Null and alternative hypotheses: h0= = 3. 5.
