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Back to 7.3 Using the Central Limit Theorem

7.3 Exercise 24

Avg difficulty 2.5


Use the following information to answer the next five exercises: The length of time a particular smartphone's battery lasts follows an exponential distribution with a mean of ten months. A sample of 64 of these smartphones is taken.

  1. What is the standard deviation?
  2. What is the parameter m?

OpenStax Introductory Statistics 2e, 7.3 Using the Central Limit Theorem, exercise 24

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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.