Basis for the Range Rule of Thumb and the
Chapter 6, Problem 46(choose chapter or problem)
Basis for the Range Rule of Thumb and the Empirical Rule. In Exercises 4548,find the indicated area under the curve of the standard normal distribution, then convertit to a percentage and fill in the blank. The results form the basis for the range rule ofthumb and the empirical rule introduced in Section 3-3. About % of the area is between z = -2 and z = 2 (or within 2 standard deviationsof the mean).
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