Find the Median of the Exponential Probability Density Function $f ( t ) = \frac { 4 } { 5 } e ^ { - \frac { 4 t } { 5 } }$

question 38

Multiple Choice

Find the median of the exponential probability density function $f ( t ) = \frac { 4 } { 5 } e ^ { - \frac { 4 t } { 5 } }$ over the interval $[ 0 , \infty )$ .

• A)0.555
• B)0.693
• C)0.866
• D)0.485
• E)0.400