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(Step-by-Step) The life of one species of poplar tree is normally distributed with mean = 28 years and standard deviation = 3.1 years. If one tree is chosen

Question: The life of one species of poplar tree is normally distributed with mean = 28 years and standard deviation = 3.1 years.

  1. If one tree is chosen at random, what is the probability it will live 30 years or more?

b. What is the probability that the average lifetime of twenty-five (25) such trees will be 30 years or more?

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