Are the response and explanatory variables correct?

ction 1. Research Question WHO (World Health Organisation) conducted a study which determined whether the COVID -19 Vaccine rollout affected the economy. Countries with a low to middle - lower income will profit from the rollout, increasing their economy by $38 billion if their vaccination rate was the same as a country with high GDP, which raises the question; Is there a connection between the COVID- 19 vaccination rollout affecting a Country's GDP per Capita? The explanatory variable are the countries current GDP, the response variable is how much the country's economy is boosted