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Course: AP®︎/College Statistics > Unit 9

Lesson 1: The normal distribution, revisited
Math
AP®︎/College Statistics
Sampling distributions
The normal distribution, revisited
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Probability in normal density curves

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Problem

A set of middle school student heights are normally distributed with a mean of 150 centimeters and a standard deviation of 20 centimeters. Let X= the height of a randomly selected student from this set.
Find P(X>175).
You may round your answer to two decimal places.
  • Your answer should be
  • an exact decimal, like 0.75