Sociology 2205A/B Lecture Notes - Lecture 9: Analysis Of Variance
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Step 2 state the null hypothesis: h0: 1 = 2, the null asserts there is no significant difference between the populations, h1: 1 2, the research hypothesis contradicts the h0 and asserts there is a significant difference between the populations, step 3 select the sampling distribution and establish the critical region. Sampling distribution = z distribution: alpha ( ) = 0. 05, z (critical) = 1. 96, sampling distribution = z distribution, alpha ( ) = 0. 05, z (critical) = 1. 96. Step 5 make a decision: the obtained test statistic (z = 19. 74) falls in the critical region so reject the null hypothesis, the difference between the sample means is so large that we can conclude (at = 0. 05) that a difference exists between the populations represented by the samples, the difference between the email usage of middle class and working class families is significant (z=19. 74, =. 05)
