In: Advanced Math
(a)
Density of an Exponential Distribution is given by:
, (1)
for x 0
= 0 for x < 0
(b)
Step 1:
Moment Generating Function is given by:
(2)
Step 2:
Substituting (1) in (2), we get:
between limits 0 to
Step 3;
Applying limits, we get:
Thus, answer is:
,