PSYCH 100A Chapter 10: Psych 100A Ch10
Document Summary
Chapter 10 inferences about means of single samples. Imagine possible outcomes of experiments that might be conducted if the null were true. Illustrate the null with sketches of the variable (iq), sample statistic (mean. Iq), and test statistic (z) all assuming the null is true. Sample statistic distribution is the sampling distribution of means. Standard deviation of this distribution = standard error. What happens if we draw random samples over and over again. (cid:1872)(cid:1857)(cid:1871)(cid:1872) (cid:1871)(cid:1872)(cid:1872)(cid:1871)(cid:1872)(cid:1855)=(cid:3046)(cid:3040)(cid:3043)(cid:3039)(cid:3032) (cid:3046)(cid:3047)(cid:3047)(cid:3046)(cid:3047)(cid:3030) (cid:3043)(cid:3042)(cid:3043)(cid:3048)(cid:3039)(cid:3047)(cid:3042)(cid:3041) (cid:3043)(cid:3045)(cid:3040)(cid:3032)(cid:3047)(cid:3032)(cid:3045) (cid:3046)(cid:3047)(cid:3041)(cid:3031)(cid:3045)(cid:3031) (cid:3032)(cid:3045)(cid:3045)(cid:3042)(cid:3045) (cid:3042)(cid:3033) (cid:3047) (cid:3032) (cid:3046)(cid:3040)(cid:3043)(cid:3039)(cid:3032) (cid:3046)(cid:3047)(cid:3047)(cid:3046)(cid:3047)(cid:3030) exception of the scaling. Can illustrate with the same curve but two axes. Distribution of sample statistic and test statistic are the same with the. Set criterion for rejecting the null hypothesis. Assume null is true then test if assumption is reasonable. Critical value of the statistic (): criterion set beforehand, the beginning of the rejection region. If observed value of statistic lies in the rejection region we reject the null hypothesis.
