Question: About of the area is between z 3 5
About % of the area is between z = -3.5 and z = 3.5 (or within 3.5 standard deviations of the mean). Find the indicated area under the curve of the standard normal distribution, then convert it to a percentage and fill in the blank. The results form the basis for the range rule of thumb and the empirical rule introduced in Section 3-3.
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