The Contingency Table Below Provides a Joint Frequency Distribution for a Random

question 53

Multiple Choice

The contingency table below provides a joint frequency distribution for a random sample of patients at a hospital classified by blood type and sex. Blood Type $$\begin{array} { | l | c | c | c | c | c | } \hline \text { Sex } & \text { O } & \text { A } & \text { B } & \text { AB } & \text { Total } \\\hline \text { F } & 96 & 95 & 25 & 9 & 225 \\\hline M & 74 & 66 & 18 & 7 & 165 \\\hline \text { Total } & 170 & 161 & 43 & 16 & 390 \\\hline\end{array}$$ If a person is selected at random from the sample,find the probability that the person has blood type A and is female.

• A)0.746
• B)0.590
• C)0.244
• D)0.990
• E)0.422

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