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[All Steps] Information from the Department of Motor Vehicles indicates that the average age of licensed drivers is = 39.7 years with a standard deviation of

Question: Information from the Department of Motor Vehicles indicates that the average age of licensed drivers is = 39.7 years with a standard deviation of \(\sigma \) =12.5 years. Assuming that the distribution of drivers’ ages is approximately normal,

  1. What proportion of licensed drivers are more than 50 years old?
  2. What proportion of licensed drivers are less than 30 years old?

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