Many named distributions axe special cases of the more common distributions already discussed. For each of the
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(a) If X ~ exponential(β), then Y = X1/γ has the Weibull(γ, β) distribution, where γ > 0 is a constant.
(b) If X ~ exponential(β), then Y = (2X/β)1/2 has the Rayleigh distribution.
(c) If X ~ gamma(a, b), then Y = 1/X has the inverted gamma IG(a, b) distribution. (This distribution is useful in Bayesian estimation of variances; see Exercise 7.23.)
(d) If X ~ gamma(3/2, β), then Y = (X/β)1/2 has the Maxwell distribution.
(e) If X ~ exponential(l), then Y = a - γ log X has the Gumbel(a, γ) distribution, where -∞ < a < ∞ and γ > 0. (The Gumbel distribution is also known as the extreme value distribution.)
Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...
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