RE: CPR- interview22 May 2023 17:40
If only one level needs a discovery for the overall drill to be successful, we can calculate the overall probability of success by summing the individual probabilities of success at each level and subtracting the probability of all levels failing simultaneously.
Given that the probability of success at each level is 14% (0.14), and assuming there are five levels in total, the probability of all levels failing simultaneously can be calculated by multiplying the probabilities of failure at each level (1 - 0.14 = 0.86).
To calculate the overall probability of a successful drill, we can use the following formula:
Overall probability of success = 1 - probability of all levels failing simultaneously
Overall probability of success = 1 - (0.86 * 0.86 * 0.86 * 0.86 * 0.86) ≈ 0.5594 (approximately 55.94%)
Therefore, the overall probability of a successful drill, considering only one level needing a discovery, is approximately 55.94%.
I have assumed they testing 5 levels in the single drill/hole and assumed 14% CoS for each one and that declaring a discovery is only needed on 1 level to give us a project success reading...