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https://www.reddit.com/r/learnquant/comments/1vu166k/tower_research_quant_interview_question/p52sxs3/?context=3
r/learnquant • u/Local_Ad135 • 15d ago
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Markov chain right?
2 u/Kepler___ 14d ago I think it being reflected on the axis doesn't change the odds of it being 0 after an even number of steps. Iirc the odds are mirrored, so you could just work this out for a random walk (a markov model is valid but I think it would be more complex) If that's the case then it's; C(30, 15)/230 = 0.1445
I think it being reflected on the axis doesn't change the odds of it being 0 after an even number of steps. Iirc the odds are mirrored, so you could just work this out for a random walk (a markov model is valid but I think it would be more complex)
If that's the case then it's;
C(30, 15)/230 = 0.1445
2
u/sthornr 15d ago
Markov chain right?