A research study was conducted to determine the differences between older and younger adults on perceived life satisfaction. A pilot study was conducted to analyze this hypothesis. Ten older adults (over the age of 70) and ten younger adults (between 20 and 30) were provide a life satisfaction test (known to have high reliability and validity). Scores on measure range from 0 to 60 with high scores indicative of high life satisfaction; low scores indicative of low life satisfaction.
What inferential statistic would you employ to calculate the difference between the two groups (t-test, ANOVA, chi-square)?