3 Question 1
The data:
Q11 =12, 212 =11, 213 =6 , 221 =162 , 222=72, 223=363
which is represented in the following table, were derived from a study of the effectiveness of a flu
vaccine. the value in each cell of the table represents the number of individuals in that category.
Some participants in the study were given no vaccine, some were given one injection, and some
were given two injections.
No Vaccine
One Injection
Two Injections
Flu
12
11
6
No Flu
162
72
363
What is the probability that a person received one injection AND got the flu?