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6.2 Exercise 34

Avg difficulty 2.5

Use the following information to answer the next two exercises: The patient recovery time from a particular surgical procedure is normally distributed with a mean of 5.3 days and a standard deviation of 2.1 days.

The 90th percentile for recovery times is?

  1. 8.89
  2. 7.07
  3. 7.99
  4. 4.32

OpenStax Introductory Statistics 2e, 6.2 Using the Normal Distribution, exercise 34

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Adapted from Introductory Statistics 2e © 2023 Rice University. Licensed under CC BY 4.0. Source: Introductory Statistics 2e. Imported at revision 50ec917.