Anyone knows this?
Write a normal distribution graph. Approximately mark 10, 20, 70, and 80. 10-70 is one area. 20-80 is another. You can visually see that 20-70 is common area in both. So you just need to see which of the rest of the uncommon area is more.
(Let me know if you’re finding it hard to visualise. I’ll try to roughly draw and show)
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Thanks a lot