Find the Average Value of the Function $f ( t ) = 6 t \sin \left( t ^ { 2 } \right)$

Multiple Choice

Find the average value of the function $f ( t ) = 6 t \sin \left( t ^ { 2 } \right)$ on the interval $[ 0,20 ]$ . Round your answer to 3 decimal places.

A) 0.288
B) 6.228
C) 0.3
D) $0.228$
E) 12