1. Let S = ea+b2, where a, b are constants and b# 0, Z ~ N(0, o2). Find formulas for the following expectations in terms of a, b, o and , where (x) is the CDF of N(0,1) and K > 0 is a constant. (1) E(1{s>K}). (2) E(S1{s>K}). (3) First verify the equality max(S, K) = S1{S>K} – K1{s>K} + K; then use it and the results in (1) and (2) to find E [max(S, K)].
1. Let S = ea+b2, where a, b are constants and b# 0, Z ~ N(0, o2). Find formulas for the following expectations in terms of a, b, o and , where (x) is the CDF of N(0,1) and K > 0 is a constant. (1) E(1{s>K}). (2) E(S1{s>K}). (3) First verify the equality max(S, K) = S1{S>K} – K1{s>K} + K; then use it and the results in (1) and (2) to find E [max(S, K)].
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter5: Inverse, Exponential, And Logarithmic Functions
Section5.6: Exponential And Logarithmic Equations
Problem 64E
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