A study of the effectiveness of a flu vaccine was conducted with a sample of 464 people.Some participants in the study were given no vaccine,some were given one injection,and some were given two injections.The results of the study are listed in the table.
$$\begin{array} { | l | l | l | l | l | }
\hline & \begin{array} { l }
\text { No } \
\text { vaccine }
\end{array} & \begin{array} { l }
\text { One } \
\text { injection }
\end{array} & \begin{array} { l }
\text { Two } \
\text { njections }
\end{array} & \text { Total } \
\hline \text { Flu } & 8 & 5 & 12 & 25 \
\hline \text { No flu } & 135 & 41 & 263 & 439 \
\hline \text { Total } & 143 & 46 & 275 & 464 \
\hline
\end{array}$$
A person is selected at random from the sample.Find the probability that the person had two injections.Round your anser to one decimal place.
A)275.0%
B)63.3%
C)71.3%
D)67.3%
E)59.3%

Question

​A study of the effectiveness of a flu vaccine was conducted with a sample of 464 people.Some participants in the study were given no vaccine,some were given one injection,and some were given two injections.The results of the study are listed in the table. ​
$$\begin{array} { | l | l | l | l | l | } 
\hline & \begin{array} { l } 
\text { No } \
\text { vaccine }
\end{array} & \begin{array} { l } 
\text { One } \
\text { injection }
\end{array} & \begin{array} { l } 
\text { Two } \
\text { njections }
\end{array} & \text { Total } \
\hline \text { Flu } & 8 & 5 & 12 & 25 \
\hline \text { No flu } & 135 & 41 & 263 & 439 \
\hline \text { Total } & 143 & 46 & 275 & 464 \
\hline
\end{array}$$
A person is selected at random from the sample.Find the probability that the person had two injections.Round your anser to one decimal place.
A)​275.0%
B)​63.3%
C)​71.3%
D)​67.3%
E)​59.3%

Quizplus · Accepted Answer

The Answer of ​A study of the effectiveness of a flu vaccine was conducted with a sample of 464 people.Some participants in the study were given no vaccine,some were given one injection,and some were given two injections.The results of the study are listed in the table. ​
$$\begin{array} { | l | l | l | l | l | } 
\hline & \begin{array} { l } 
\text { No } \
\text { vaccine }
\end{array} & \begin{array} { l } 
\text { One } \
\text { injection }
\end{array} & \begin{array} { l } 
\text { Two } \
\text { njections }
\end{array} & \text { Total } \
\hline \text { Flu } & 8 & 5 & 12 & 25 \
\hline \text { No flu } & 135 & 41 & 263 & 439 \
\hline \text { Total } & 143 & 46 & 275 & 464 \
\hline
\end{array}$$
A person is selected at random from the sample.Find the probability that the person had two injections.Round your anser to one decimal place.
A)​275.0%
B)​63.3%
C)​71.3%
D)​67.3%
E)​59.3%

​A Study of the Effectiveness of a Flu Vaccine Was

A Study of the Effectiveness of a Flu Vaccine Was