How come I am getting a negative area for my answer with Module 4 Spreadsheet Assignment?

How come I am getting a negative area for my answer with Module 4 Spreadsheet Assignment?

ANSWER: Quick solution is you are talking about an area between two z scores problem. This can be asked as between __ and __. Or, from __ to ___.  You are not subtracting in the correct order. Switch the order of the z-scores.

YOU ALWAYS SUBTRACT: LARGER Z – SCORE – SMALLER Z SCORE.

YOU SHOULD BE DRAWING THE CURVES FOR ALL PROBLEMS SO THAT MEANS: Z-SCORE TO THE RIGHT – Z-SCORE MOST LEFT

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It should help you a lot in this course.