4. Deaths involving coronavirus disease 2019 (COVID-19) reported to NCHS by sex and age group. United States. Week ending 2/1/2020 to 9/19/2020. \begin{tabular}{ccc} Age group & all deaths involving COVID-19 & Population Thline All ages & 188,470 & $327,167,434$ \hline Under 14 & 66 & $60,885,444$ \hline $15-24$ & 353 & $42,970, 800$ \hline $25-34$ & 1457 & $45,697,774$ Thline $35-44$ & 3809 & $41, 277,888$ \hline $45-54$ & 10,057 & $41,631,699$ \hline $55-64$ & 23,991 & $42,272,636$ \hline Above 65 & 148,737 & $52,431, 193$ \hline \end{tabular) (a) If the death of a person involves COVID-19, what is the conditional probability that this person is above 55 year old? (b) Show that the events $\{$ Above 65 year old $\}$ and $\{$ Death involving COVID-19 $\}$ are NOT independent. SP.SS.3771