(All Steps) In a population of assembly-line workers, the mean length of employment with their present firm is 2.5 years. The standard deviation is 3 years.
Question: In a population of assembly-line workers, the mean length of employment with their present firm is 2.5 years. The standard deviation is 3 years. A simple random sample of 40 is drawn from this population. What is the probability that the mean will be more than 3.5 years?
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