Explanation: What happens when you cut a square diagnally? You get a triangle. What’s the diagonal value? We don’t know. This is like Pythagorean theorem where we solve using a squared + b squared = c squared. Since it’s a perfect square, you put in 10 values for a and b and solve for c. What you get from finishing the formula is 14.142. Correct me if I’m wrong btw.
The probability that the average salary between two groups is the same, is actually low. It could be close, but it's quite difficult to get the same exact amount.