Paired Samples T-tests, Correlations, and Chi-Square Analysis in Stats

This statistics homework assignment presents solutions to several statistical problems. The assignment begins with an analysis of sweetness perception under different conditions (No THC vs. Post THC), using paired-samples t-tests and correlation analysis to determine if there's a significant difference in sweetness perception. It investigates the linear relationship between the two conditions. Further, the assignment examines the means of Fixed (FW.pick) and decreasing (DW.pick) values, employing paired t-tests to compare them and determine if there is a significant difference. It considers the skewness of the data and the application of the Wilcoxon rank sum test. Finally, the assignment concludes with a chi-square test of independence to assess the relationship between performance and the drug MDMA, determining if the variables are independent or not.