The Lifetime X (In Hundreds of Hours) of a Certain $\alpha = 2 \text { and } \beta = 3$

Essay

The lifetime X (in hundreds of hours) of a certain type of vacuum tube has a Weibull distribution with parameters $\alpha = 2 \text { and } \beta = 3$ Compute the following:
a. E(X) and V(X)
b. $P ( X \leq 3 )$
c. $P ( 1.5 \leq X \leq 6 )$