Question: I need help with the formula in Excel to d etermine the total area under the standard normal curve Find the area under the normal

I need help with the formula in Excel to determine the total area under the standard normal curve

Find the area under the normal curve to the left of z = 3 plus the area under the normal curve to the right of z =3 .

Find the area under the normal curve to the left of z = 1.55 plus the area under the normal curve to the right of z =2.55.

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