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A hotel chain wanted to learn about the level of experience of its general managers. A...

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Statistics

A hotel chain wanted to learn about the level of experience ofits general managers. A random sample of 14 general managers wastaken, and these managers had a mean of 11.72 years of experience.Suppose that the standard deviation of years of experience for allgeneral managers in the chain is known to be 3.2 years. What is thelower limit of a 95% confidence interval for the mean experience ofall general managers in this hotel chain?

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