Statistical Analysis and Sample Size Calculations for Experimental Research Design - Document preview page 1

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Statistical Analysis and Sample Size Calculations for Experimental Research Design

This assignment provides a step-by-step guide to statistical analysis and sample size determination in research design.

Michael Davis

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Statistical Analysis and Sample Size Calculations for Experimental Research Design1.Calculate the sample size needed given these factors:one-tailed t-test with two independent groups of equal sizesmall effect size (see Piasta, S.B., & Justice, L.M., 2010)alpha =.05beta = .2Assume that the result is a sample size beyond what you can obtain. Use thecompromise function to compute alpha and beta for a sample half the size. Indicatethe resulting alpha and beta. Present an argument that your study is worth doingwith the smaller sample.

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