The Average Age of Vehicles Registered in the United States

question 82

Multiple Choice

The average age of vehicles registered in the United States is 96 months. Assume the population is normally distributed with a standard deviation of 15 months. Find the
Probability that the mean age of a sample of 36 vehicles is between 98 and 100 months?

• A) 15.7%
• B) 44.5%
• C) 6.4%
• D) 28.8%

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