Sociology 2205A/B Chapter Notes - Chapter 6: Absenteeism, Null Hypothesis, Statistical Hypothesis Testing

• School: Western University
• Department: Sociology
• Course: Sociology 2205A/B
• Professor: William Marshall

Document Summary

Null: 0, nothing, no difference between mean iq or males and female iq (xf=xm), no relationship, always test the null, you reject or either fail to reject. Research / alternate: opposite of null, a significant difference. Researcher is equally concerned about two possibilities: the true population value is greater than the value specified in the null hypothesis, the true population value is less than the value specified in the null hypotheses. One tailed test: appropriate for evaluating programs that are designed to solve a problem when, the direction of the difference can be confidentially predicted, the research i concerned only with differences in one tail of the sampling distribution. Making a decision: the test statistic is compared with the critical region. If test statistic falls in the critical region-reject the null hypothesis. If the test does not fall into the critical region- fail to reject the null hypothesis.