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The Table Shows Crashworthiness Ratings for Several Categories of Motor

Question 173

Multiple Choice

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.  Overall Frontal Crash Test Rating  Number  Tested  3 ( Good)   2  (Acceptable)  1 (Marginal)  0 (poor)   Small Cars X1611122 Small SUVs Y101441 Medium SUVs Z132524 Passenger Vans U112027 Midsize Cars V142507 Large Cars W199532\begin{array} { | l | l | l | l | l | l | l | } \hline&&\text { Overall Frontal Crash Test Rating }\\\hline & \begin{array} { l } \text { Number } \\\text { Tested }\end{array} & \begin{array} { l } \text { 3 } \\( \text { Good) }\end{array} & \begin{array} { l } \text { 2 } \\\text { (Acceptable) }\end{array} & \begin{array} { l } 1\\\text { (Marginal) } \\\end{array}& \begin{array} { l } 0\\\text { (poor) } \\\end{array} \\\hline \text { Small Cars } X & 16 & 1 & 11 & 2 & 2 \\\hline \text { Small SUVs } Y & 10 & 1 & 4 & 4 & 1 \\\hline \text { Medium SUVs } Z & 13 & 2 & 5 & 2 & 4 \\\hline \text { Passenger Vans } U & 11 & 2 & 0 & 2 & 7 \\\hline \text { Midsize Cars } V & 14 & 2 & 5 & 0 & 7 \\\hline \text { Large Cars } W & 19 & 9 & 5 & 3 & 2 \\\hline\end{array}
Compute the probability distribution for X.


A) x3210P(X=x) 0.10.68750.106250.10625\begin{array} { l } x & 3&2&1&0\\P ( X = x ) &0.1&0.6875&0.10625&0.10625 \\\end{array}
B) x3210P(X=x) 0.1250.06250.68750.125\begin{array} { l } x & 3&2&1&0\\P ( X = x ) &0.125&0.0625&0.6875&0.125 \\\end{array}
C) x3210P(X=x) 0.06250.68750.1250.125\begin{array} { l } x & 3&2&1&0\\P ( X = x ) &0.0625&0.6875&0.125&0.125 \\\end{array}
D) x3210P(X=x) 0.1250.1250.68750.0625\begin{array} { l } x & 3&2&1&0\\P ( X = x ) &0.125&0.125&0.6875&0.0625 \\\end{array}
E) x3210P(X=x) 0.106250.10.68750.10625\begin{array} { l }x&3&2&1&0\\P(X=x) &0.10625&0.1&0.6875&0.10625\end{array}

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