Statistics > QUESTIONS & ANSWERS > Grand Canyon University - HLT 362V HLTV Exercise 31 & 32 Graded A+ (All)
Grand Canyon University - HLT 362V HLTV Exercise 31 & 32 Graded A+
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Exercise 31 1. Do the example data meet the assumptions for the independent samples t-test? Provide a rationale for your answer. a. The assumptions are as follows: i. Sample means from the populat... ion are normally distributed ii. The dependent variable is measured at the interval/ratio level iii. The two samples have equal variance iv. All the observations within each sample are independent. b. The example data meets the assumptions for the independent samples t-test. 2. If calculating by hand, draw the frequency distributions of the dependent variable, wages earned. What is the shape of the distribution? If using SPSS, what is the result of the Shapiro-Wilk test of normality for the dependent variable? a. b. The shape of the distribution is standard. 3. What are the means for two group's wages earned? a. b. The treatment group mean is $232.70. The Control group mean is $128.40. 4. What is the independent samples t-test value? a. b. t-test is 4.217 5. Is the t-test significant at a = 0.05? Specify how you arrived at your answer. a. The t-test is significant at = 0.05 [Show More]
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