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. $P ( 1.5 \leq X \leq 6 )$

Question

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. $P ( 1.5 \leq X \leq 6 )$

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The Answer of 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. $P ( 1.5 \leq X \leq 6 )$

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

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