The mean probability of 100 observations is .0422, and it is suggested that this value can be used as an estimate for a larger sample size of 200, with some statistical variations expected. The discussion emphasizes that while the mean will remain approximately the same regardless of sample size, the standard deviation will decrease as the sample size increases. Clarification on the type of experiment is necessary for more precise guidance. Understanding the relationship between sample size and mean probability is crucial for accurate statistical analysis. Overall, the mean probability can be extrapolated, but careful consideration of the sample context is essential.