The Table Shows Crashworthiness Ratings for Several Categories of Motor

The table shows crashworthiness ratings for several categories of motor vehicles. Take X as the crash-test rating of a small car, Y as the crash-test rating for a small SUV, and so on, as shown in the table. $\begin{array}{|l|l|l|l|l|l|}\hline&&\text { Overall Frontal Crash Test Rating }\\\hline & \text { Number Tested } & \begin{array}{l}\mathbf{3} \\\text { (Good) }\end{array} & \begin{array}{l}\mathbf{2} \\\text { (Acceptable) }\end{array} & \begin{array}{l}\mathbf{1} \\\text { (Marginal) }\end{array} & \begin{array}{l}\mathbf{0} \\\text { (Poor) }\end{array} \\\hline \text { Small Cars } X & 20 & 1 & 13 & 3 & 3 \\\hline \text { Small SUVs } Y & 10 & 1 & 4 & 4 & 1 \\\hline \text { Medium SUVs } Z & 15 & 3 & 5 & 3 & 4 \\\hline \text { Passenger Vans } U & 13 & 3 & 0 & 3 & 7 \\\hline \text { Midsize Cars } V & 15 & 3 & 5 & 0 & 7 \\\hline \text { Large Cars } W & 19 & 9 & 5 & 3 & 2 \\\hline\end{array}$ Compute $P ( Y \leq 1 )$ .

A) $P ( Y \leq 1 ) = 0.3$
B) $P ( Y \leq 1 ) = 0.2$
C) $P ( Y \leq 1 ) = 0.1$
D) $P ( Y \leq 1 ) = 0.5$
E) $P ( Y \leq 1 ) = 1$