Answer
$35.6 \pm0.1$ degrees Celsius
The uncertainty is $\pm$ 0.1 degrees Celsius
Work Step by Step
We begin by converting 96.1 F to Celsius:
C = (96.1-32)*5/9=35.6 degrees Celsius
We continue by converting the lower and upper bounds the temperature may be:
C = (96.3-32)*5/9=35.7 degrees Celsius
C = (95.9-32)*5/9=35.5 degrees Celsius
Therefore the uncertainty is 0.1 degrees Celsius.