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Probabilities only using Sigma

Normal Probabilities using only Sigma: Area (k) / Sigma = Normal Probabilities RV Sigma: 1) Area of the Standard Deviation of the Normal Curve 2 Gives Z values for the Normal Curve 3) Normal Probabilities for 1 Std. 4)Cumulative Probabilities for 1 Std. 5) Normal Probabilities between: (-1 to 1)