A Study of the Effectiveness of a Flu Vaccine Was

question 23

Multiple Choice

A study of the effectiveness of a flu vaccine was conducted with a sample of 497 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. $$\begin{array} { | l | l | l | l | l | } \hline & \text { No vaccine } & \text { One injection } & \text { Two injections } & \text { Total } \\\hline \text { Flu } & 8 & 3 & 12 & 23 \\\hline \text { No flu } & 145 & 52 & 277 & 474 \\\hline \text { Total } & 153 & 55 & 289 & 497 \\\hline\end{array}$$
A person is selected at random from the sample.Find the specified probability that the person got the flu and had one injection.Round your anser to one decimal place.

• A)5.6%
• B)2.6%
• C)3.6%
• D)0.6%
• E)6.6%

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