Describe the homogeneity of variance assumption and explain why it is important for the independentmeasures t test.
Answer to relevant QuestionsOne sample has SS = 36 and a second sample has SS = 18. a. If n = 4 for both samples, find each of the sample variances and compute the pooled variance. Because the samples are the same size, you should find that the pooled ...Research has shown that losing even one night's sleep can have a significant effect on performance of complex tasks, such as problem solving (Linde & Bergstroem, 1992). To demonstrate this phenomenon, a sample of n = 25 ...Research indicates that the color red increases men’s attraction to women (Elliot & Niesta, 2008). In the original study, men were shown women’s photographs presented on either a white or a red background. Photographs ...Example 11.1 in this chapter presented a repeatedmeasures research study demonstrating that swearing can help reduce ratings of pain (Stephens, Atkins, & Kingston, 2009). In the study, each participant was asked to plunge a ...The following data summarize the results from an independent-measures study comparing three treatment conditions. a. Use an ANOVA with a = .05 to determine whether there are any significant differences among the three ...
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