A Statistical Study Indicates That the Fraction of the Can $f ( t ) = e ^ { - 0.3 t }$

True/False

A statistical study indicates that the fraction of the can openers manufactured by a certain company that are still in working condition after t years of use is approximately $f ( t ) = e ^ { - 0.3 t }$ . The fraction that can be expected to fail during the 2nd year of use is about $\frac { 19 } { 100 }$ .