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: Freq(X) X 1 20 2 220 3 105 4 50 5 5 Which of the following terms best describes the distribution of required service visits? Select one: a. Symmetrically abnormal Ob. Upwardly-kurtotic O c. Downwardly-kurtotic d. Right-skewed (Positive Skew) e. Left-skewed (Negative Skew) Clear my choice