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5.3 Exercise 48

Avg difficulty 2.5


Use the following information to answer the next three exercises. The average lifetime of a certain new smartphone is three years. The manufacturer will replace any smartphone failing within two years of the date of purchase. The lifetime of these smartphone is known to follow an exponential distribution.

What is the median lifetime of these smartphones (in years)?

  1. 0.1941
  2. 1.3863
  3. 2.0794
  4. 5.5452

OpenStax Introductory Business Statistics 2e, 5.3 The Exponential Distribution, exercise 48

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