A small manufacturing business has a group life insurance contract on it employees. Suppose that the aggregate loss, S is distributed as a lognormal with E(S) = 0.085 and Var(S) = 25.32. Use the lognormal approximations to find Pr(S>0.1105). %3D A.5.1.1 Lognormal-u,0 (u can be negative)

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Course: Actuarial Math

A small manufacturing business has a group life insurance contract on its
employees. Suppose that the aggregate loss, S is distributed as a lognormal with
E(S) = 0.085 and Var(S) = 25.32. Use the lognormal approximations to find
Pr(S>0.1105).
A.5.1.1 Lognormal-u,0
(µ can be negative)
1
In x - u
f(x)
: exp(-2²/2) = 4(2)/(ox),
= Z
F(x)
Ф(2),
E[X*]
exp (kµ + k?o?),
´In x – µ – ko²'
E[(X ^ x)*]
exp (kи + }?а?) Ф
+ a*[1 – F(x)],
%3D
Mode
exp (и — а?).
Transcribed Image Text:A small manufacturing business has a group life insurance contract on its employees. Suppose that the aggregate loss, S is distributed as a lognormal with E(S) = 0.085 and Var(S) = 25.32. Use the lognormal approximations to find Pr(S>0.1105). A.5.1.1 Lognormal-u,0 (µ can be negative) 1 In x - u f(x) : exp(-2²/2) = 4(2)/(ox), = Z F(x) Ф(2), E[X*] exp (kµ + k?o?), ´In x – µ – ko²' E[(X ^ x)*] exp (kи + }?а?) Ф + a*[1 – F(x)], %3D Mode exp (и — а?).
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