Problem 2
Find the area of the region bounded by the given curves.
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Elements of Statistics – Chapter 6 Notes Key Points Density Curves Normal Distribution Standard Normal Curve Standard Normal Table Density Curve A fitted curve in regard to distribution Is ALWAYS ON or ABOVE the horizontal axis Total area under a density curve is always equal to 1 o Density Histogram To determine the density of a class, take the relative frequency and divide by the width of class. AREA = DENSITY x WIDTH Normal Distribution A variable is “normally distributed” if its distribution has the shape of a symmetric curve. o Characterized by its Mean, , and a Standard Deviation, o The Mean
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