Statistics ( probability, Gamblers Ruin, Marcov chain) - Check details before you bid

Please check the link below; file:///home/chronos/u-cabeec60f0f371fd1329a0fef7d537c578331e69/Downloads/[login to view URL] The above link has some probabilistic equations in section 3, 4 and 5. I would need you to explain those sections in details to me that how the calculations are done and what formula has been used to find the solution. Explain in a way as you are explaining someone who has no clue about statistics. You can write in a word file for me and then I will ask u each of the terms for clarification. Section 5 is the most important section for me as I need to fully understand how come " When q ≥ 0.5, no amount of confirmations will suffice to decrease the probability, as the double spend is always100% " and also the Table 1.