SOC210 Lecture 8: Hypothesis Sampling
12 May 2017
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Soc 210 lecture 8 hypothesis testing (one sample) Outline: the five step model, hypothesis testing for single sample means in large and small samples, other material covered. Hypothesis testing: explore whether parameters in a model take specified values or fall in certain ranges, designed to detect differences that did not occur by random chance. Compare the average gpas of a sample of engineering students with students in general. The value of the parameter, average gpa for all students is 2. 70 ( = 2. 70), with a standard deviation of 0. 70 ( = 0. 70) For a random sample of 117 engineering students major, the sample mean is. Two potential explanations for the difference: the mean gpa for engineering is the same as the broader population mean (2. 70) The difference is trivial and caused by random chance: the mean gpa for engineers is different than the broader population mean (2. 70)
