actsc 446 - ACTSC/STAT 446/846 Assignment #1 Due date:...

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ACTSC/STAT 446/846 Assignment #1 Due date: January 23, 2009 Note: Recall that, when handing in your assignment, you are requested to use a cover page showing only your UWID number and your section (846 students: also write “846” on the cover page) and to write your full name on the next page. Assignments must be handed in during the TAs office hours before or on the due date (see the Calendar on UW-ACE for details). Let W = { W t } t 0 be a standard Brownian motion. 1. Problems 18.9 and 20.9 in McDonald’s book 1 . 2. Let 0 t 1 < t 2 . (a) Write the probability density functions of W t 2 - W t 1 and W t 1 - W t 2 . (b) Define Y t = αt + βW t , where α and β are constants. Write the probability density function of Y t . (c) If W t 1 = - π , write the (conditional) probability density function of W t 2 . 3. Let the price at time t of RIM stock be given by S t = S 0 exp { μt + σW t } , where μ and σ are constants. (a) Find the SDE for which
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This note was uploaded on 01/16/2011 for the course ACTSC actsc 446 taught by Professor Idk.. during the Spring '09 term at Waterloo.

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actsc 446 - ACTSC/STAT 446/846 Assignment #1 Due date:...

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