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6.2 Exercise 39

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 Statistics, 6.2 Using the Normal Distribution, exercise 39

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Adapted from Statistics © 2022 Rice University. Licensed under CC BY 4.0. Source: Statistics. Imported at revision 7dea80a.