Lemma
EasyNormal distribution
OpenStax, Statistics §6.1 The Standard Normal Distribution · Try It 5 · Statistics · Normal distribution

The Standard Normal Distribution · Try It 5

Suppose X has a normal distribution with mean 25 and standard deviation five. Between what values of x do 68 percent of the values lie?

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OpenStax, Statistics · §6.1 The Standard Normal Distribution · Try It 5

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