False positives false negatives

https://www.codecademy.com/paths/analyze-data-with-python/tracks/ida-6-statistics-for-data-analysis/modules/ida-6-3-sample-and-population-mean/lessons/statistical-concepts/exercises/type-i-or-type-ii

" Examine these lists and make sure you understand what they represent."

Nope. No idea. Can you explain in the lesson please?