Final answer:
The estimated probability that Nair Corp. will complete the building by August 1, 2026, is 70%, according to the company's own estimations based on previous experience.
Step-by-step explanation:
The question asks us about the probability that Nair Corp. will complete the building by August 1, 2026. Given the information, Nair Corp. themselves estimate that there is a 70% likelihood of completing the construction by that date. No other calculation is required, as the company has provided their own estimation based on prior experience.