OpenStax, Introductory Statistics 2e §6.2 Using the Normal Distribution · Try It 4 · Statistics · Normal distribution
Using the Normal Distribution · Try It 4
Use the information in to answer the following questions.
(a) Find the 30^th percentile, and interpret it in a complete sentence.
(b) What is the probability that the age of a randomly selected smartphone user in the range 13 to 55+ is less than 27 years old.
Its source prints no answer for this problem, so there's nothing to check against.
OpenStax, Introductory Statistics 2e · §6.2 Using the Normal Distribution · Try It 4
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