This document presents a student's comprehensive solution to Biostatistics Assignment 2, focusing on the analysis of a dataset pertaining to NSW 17-year-olds. The assignment encompasses several key statistical concepts, including calculating point estimates and 95% confidence intervals for the proportion of females, interpreting these intervals, and assessing consistency with the statement that 50% of 17-year-olds in NSW are female. The solution includes the application of appropriate statistical tests such as the Wilcoxon Signed-rank test and the Chi-square test, along with R codes and output for hypothesis testing, specifically to compare self-reported MVPA hours between genders and analyze the association between gender and license status. The student also addresses the requirements for a Chi-square test and discusses the importance of sample size in research, including a calculation for determining an appropriate sample size given specific parameters.