Default Normal Template

In Fig. 4-5, we have a normal curve in the X’ scale and a standard normal curve in the z scale. The area under the curve within 1, 2, and 3 standard deviation units from the mean is 68.26, 95.54, and 99.74% receptively. Note that great similarity and important difference between Figs. 4-5 and 3-4. ................
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