其它
\textbf{Sean and Evan are college roommates who have part-time jobs as servers in restaurants. The distribution of Sean's weekly income is approximately normal with mean $\textbackslash$225$ and standard deviation $\textbackslash$25$. The distribution of Evan's weekly income is approximately normal with mean $\textbackslash$240$ and standard deviation $15. Assuming their weekly incomes are independent of each other, which of the following is closest to the probability that Sean will have a greater income than Evan in a randomly selected week?} 
Overseas Competition->Knowledge Point->Calculation Modules
\textbf{Sean \textasciitilde{} N(225, 25)}  \textbf{Evan \textasciitilde{} N(240, 15)}  \textbf{→}  \textbf{Sean - Evan \textasciitilde{} N(-15, 29.155)}  \textbf{P(Sean-Evan \textgreater{} 0) = 1-P(X\textless0) = 0.303} 