simplify this "Thanks for your response! I agree that AI is transforming employee training. While it can personalize and scale learning, I think human-led elements will still be essential for soft skills and team dynamics, so a hybrid approach seems more likely than a full takeover. You also make a great point about the z-test vs. t-test. You're right, the key difference is whether the population parameters are known. I mentioned sample size because it's often tied to whether we can estimate those parameters reliably, but your clarification really helps sharpen that distinction