If the highest observation in the set S is 3 standard deviations above the arithmetic mean and the lowest observation in the set is 5 standard deviations below the mean, what is the arithmetic mean of the set?
(1) The range of the set is 72
(2) The lowest term in the set is 40.
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(1) The range of the set is 72
(2) The lowest term in the set is 40.