an Someone te correot answer ih dletail ? C me whis the Researchers avei Me mean

Question

an Someone te correot answer ih dletail ? C me whis the Researchers avei Me mean ditures is associated wth in ome t medical expenditures usina inome and age. Th niome and teis stahstically signiha hut the main erathion bchween the model The inttrachon effet (Loethient) signihcant age is not stahshcall a the n a expendures vanes by income, but the assouahon behucen inlome and medical expenditures dues not vay by age b. The assoaahen beh ten age and meaical expendihs s CThe ass0ciahon behurcen age and medical ependitres d.The associahon beween age an aoes not vay by ncome (ontrollina-for-incon not sta hst callts)gnit can t~ is income is is not stahsh tallg siantcent

Explanation / Answer

Since the main effect of age is not significant, this implies that the impact of age on medical expenditure cannot be seperately estimated or there is not a significant effect of age on medical expenditures alone when income is fixed at a certain level. Moreover interaction term is of the multiplicative form, which is significant, thus when income is 0, the entire interaction term becomes zero, so does the main effect of income. Simultaneously the main effect of age is not significant statistically.Thus option D is correct.

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