9.73 The 2021 World Happiness Report provides the change in scores in 2020 compared to the average relevant scores from 2017 to 2019 for nations in ten regions across the world. Using the data file Happiness Report Data, create appropriate subsamples.

Perform an analysis of the variables LadderChange, PosAffectChange, and NegAffectChange for Central and Eastern Europe, East Asia, Latin America, the Caribbean, and Sub-Saharan Africa, and prepare a short report indicating how well the nations in these regions succeeded in keeping these variables unaffected by COVID-19. Assume normality and data to be representative samples of regions.