Lemma
EasyNormal distribution
OpenStax, Introductory Business Statistics 2e §6.2 Using the Normal Distribution · Example 4 · Statistics · Normal distribution

Using the Normal Distribution · Example 4

a. Determine the probability that a random smartphone user in the age range 13 to 55+ is between 23 and 64.7 years old.

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OpenStax, Introductory Business Statistics 2e · §6.2 Using the Normal Distribution · Example 4

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