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Help Save & Exit Submit The distribution of a sample of the outside diameters of PVC gas pipes approximates a symmetrical, bell-shaped distribution. The arithmetic mean is 14.0 cm, and 0o the standard deviation is 01 cm. About 68 percent of the outside diameters lie between what two amounts? Multiple Choice points 01:59:18 O 13.5 and 14.5 cm O 13.0 and 15.0 cm O 13.9 and 141 cm O 13.8 and 14.2 cm