False positives are positive results from the test of a non-infected person, which happens 100-97=3% of the time, choice C.
Answer:
C
Step-by-step explanation:
The lower quartile is the value at the left side of the box, that is
LQ = 14
The upper quartile is the value at the right side of the box, that is
UQ = 28
The median is positioned at the vertical line inside the box. that is
Median = 21
