Rhonda studies data on the average income per person and life expectancy in a sample of countries. she finds that these measures are highly correlated (r = 0.72). what are possible interpretations of rhonda’s finding? select all that apply. higher incomes might result in longer lives. people in countries that have higher average incomes tend to have longer lives. longer lives definitely cause higher incomes. another variable might be associated with higher incomes and longer lives. decreased income causes shorter lives.