A Study of the Effectiveness of a Flu Vaccine Was

Multiple Choice

A study of the effectiveness of a flu vaccine was conducted with a sample of 503 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. $$\begin{array} { | l | l | l | l | l | } \hline & \text { No vaccine } & \text { One injection } & \text { Two injections } & \text { Total } \\\hline \text { Flu } & 9 & 5 & 19 & 33 \\\hline \text { No flu } & 148 & 60 & 262 & 470 \\\hline \text { Total } & 157 & 65 & 281 & 503 \\\hline\end{array}$$
A person is selected at random from the sample.Find the specified probability that the person did not get the flu.Round your anser to one decimal place.

A) 81.4%
B) 89.4%
C) 85.4%
D) 77.4%
E) 93.4%