This document presents a comprehensive solution to a biostatistics assignment. It includes the calculation and interpretation of a 95% confidence interval for mean grip strength, determining if a specific grip strength falls within the interval. The assignment further explores hypothesis testing, comparing grip strength between males and females using t-tests and Wilcoxon tests, and assessing the distribution of grip strength. Additionally, the solution includes the application of a one-sample Chi-square test for proportions, calculating confidence intervals for hypertension proportions, and comparing grip strength between dominant and non-dominant hands using the Wilcoxon test. Finally, it addresses sample size calculations for different margin of errors and discusses the advantages and disadvantages of different confidence levels. The solution incorporates R-Commander outputs and detailed interpretations to support the statistical analyses.
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