A copier services company is considering adding an advanced model to its product line but is concerned about excessive maintenance calls. During a trial introduction in a test market, maintenance personnel recorded X, the number of service visits required to get a particular copier up and running to the customer's satisfaction. These data are summarized in the following table:?

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1 2 3 4 5 Freq (X) 20 220 105 50 5 1 2 3 4 5 Freq (X) 20 220 105 50 5