Psychology 2810 Lecture Notes - Lecture 9: Point Estimation, Null Hypothesis, Fair Coin

• School: Western University
• Department: Psychology
• Course: Psychology 2810
• Professor: Stephen Lupker

Document Summary

Inferential technique used most of the time. Testing hypothesis about binomial parameter, p--- two tail test: probability of success vs. failure, 1st step: start with idea that you are assuming that nothing special is going on- the null hypothesis (h0) Null hypothesis- it is a fair coin, p=1/2: 2nd step: state the opposite. P is not equal to 1/2: 3rd step: selecting sample statistic. Select what is most telling of the validity of the null. What statistic is going to help me decide btwn 2 hypotheses. How many successes are observed if you ip a number of times (lets say you ip 10 times). X can be 10, 9, 8, 7,6, 5,4, 3, 2, P(x) for 10 and 0 is . 001, 9 and 1 is . 001, 8 and 2 are . 044. You select your rejection region and selection alpha- represents the probability of something falling in the rejection region if the null hypothesis is.