Posted by **Molly** on Monday, October 10, 2011 at 9:22pm.

Consider an RV X with the following density given parameters α and γ .

f (x) = {(1/γ)e^(-(x-α)/γ) if x>α

{0 if x ≤ α.

a. Find E[X].

b. Find V[X].

c. If α = 4, γ = 2, ﬁnd P (X > 8).

d. Find P (X < α + 3γ ).

e. Find the cdf for X , F (x).

## Answer This Question

## Related Questions

- math - The roots of the polynomial f(x)=2x3+20x2+201x+2013 are α,β and...
- Pre-calculus - Derive an identity that transforms sin(α+β+γ) into...
- Precalc - If α, β, and γ are direction angles for a vector in ...
- Math - the vector u makes angles α(alpha), β(beta), γ(gama) with ...
- Engineering/Physics - A force F = 7^i + 6^j - 5^k lb. acts at the origin. Find ...
- physics - A calorie is unit of heat or energy and it equals about 4.2J, where 1J...
- math - Given the indicated parts of triangle ABC with γ = 90°, approximate...
- MATH - Given the indicated parts of triangle ABC with γ = 90°, approximate...
- Math Trigonometry - Given w=2+2i and v=−5√3+5i, vw^2 can be ...
- Physics - Two cars, A and B, travel in a straight line. The distance of A from ...

More Related Questions