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calculating probabilities and x (inverse calculations)
calculating probability on the right side of the curve

probabilities below a value

probabilities from the right tail of the curve

probabilities on the left of a curve

probabilities from the left tail of the curve

probabilities from both sides of the curve

probabilities from two tails of the curve

probabilities by difference

using z to calculate the value of x - where x is positive

using z to calculate the value of x - where x is negative
