SOAN 2120 Lecture : October 4.docx

• School: University of Guelph
• Department: Sociology and Anthropology
• Course: SOAN 2120
• Professor: David Walters

Document Summary

October 4, 2012 hypothesis testing and review. Hypothesis (significance) tests test claims about a population: test if the mean of the population is a specified value, test for the difference between two values tests are based on the sampling distribution. How it works: state the null hypothesis, counter-intuitive testing that there is no difference (h, hypothesis, 0, null the 0 hypothesis . Mu equals: state the alternative hypothesis (the alternative hypothesis is that there is a difference) (eg. mu does not equal 0) Assume that someone tells you that the average iq of university students is. You want to know whether the average iq at guelph is different from 113 randomly select 100 students: write an iq tests, record scores. Alternative hypothesis if there is no difference between the iq of students at guelph and the iq of university students in general then mu = 133 .