FILE A sociologist w ishes to stu d y th e relationship betw een hap p in ess and age. He interview s 24 individuals and collects d ata on age and happiness, m easured on a scale from 0 to 100. A portion of th e d ata is show n; th e en tire d ata se t is found on th e te x t w ebsite, labeled H a p p in e s s a n d A ge.

Age Happiness 49 62 51 66 69 72 Estim ate H appiness = β 0 + β1Age + ε . At th e 1%

significance level, is Age significant in explaining H appiness?

Show th e relevant step s of a hypothesis te st using th e critical value approach.