Lemma
EasyNormal distribution
OpenStax, Introductory Business Statistics 2e §6.2 Using the Normal Distribution · Example 5 · Statistics · Normal distribution

Using the Normal Distribution · Example 5

b. Determine the probability that a randomly selected smartphone user in the age range 13 to 55+ is at most 50.8 years old.

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OpenStax, Introductory Business Statistics 2e · §6.2 Using the Normal Distribution · Example 5

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