Lecture Slides PSY201 10.7.13

A b c the mean is the same as the known populaon mean

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: ibu>on (distribu>on of means). a)  The mean is the same as the known popula>on mean. b)  The standard devia>on is figured as follows:   Figure the es>mated popula>on variance: S2 = SS/df   Figure the variance of the distribu>on of means: S2M = S2/N   Figure the standard devia>on of the distribu>on of means: SM = √S2M c)  The shape will be a t distribu>on with N – 1 degrees of freedom. 3.  Determine the cutoff sample score on the comparison distribu>on at which the null hypothesis should be rejected. a)  Decide on the significance level and whether to use a one ­ tailed or two ­tailed test. b)  Look up the appropriate cutoff in a t table. 4.  Determine your sample’s score on the comparison distribu>on: t = (M – μ)/SM 5.  Decide whether to reject the null hypothesis (comparing Step 4 to cutoff in Step 5) A popula>on as a mean of 23. A sample of N = 4 is given an experimental procedure and has scores of 20, 22, 22, and 20. Test the hypothesis that the procedure leads...
View Full Document

This note was uploaded on 03/24/2014 for the course PSY 21201 taught by Professor Bernard during the Winter '13 term at SUNY Stony Brook.

Ask a homework question - tutors are online