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Back to 6.1 The Standard Normal Distribution

6.1 Exercise 54

Avg difficulty 2.5

Use the following information to answer the next two exercises: The life of Sunshine CD players is normally distributed with mean of 4.1 years and a standard deviation of 1.3 years. A CD player is guaranteed for three years. We are interested in the length of time a CD player lasts.

Define the random variable X in words. X = _______________.

OpenStax Statistics, 6.1 The Standard Normal Distribution, exercise 54

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