SOAN 3120 Chapter Notes - Chapter 14: Null Hypothesis, Test Statistic, Statistical Hypothesis Testing

• School: University of Guelph
• Department: Sociology and Anthropology
• Course: SOAN 3120
• Professor: Michelle Dumas

Document Summary

Just like in chapter 11, p is found in relation to z. The table a gives us the proportion of the curve to the left of that point (a value from 0. 001 to . 9999) which we can use to find the p value (more on that in 14. 22). Note that the portion of the equation in the brackets is itself an equation of division, where the standard deviation of the population is divided by the square root of the number included in the sample. See example 14. 9 on page 379 of the textbook to see how this equation is used. This is the equation we use for 14. 40, where it gives us a value for z, which we then use to find the p value. Since we are doing hypothesis testing, we use the p value to reject the null hypothesis.