Jamie has a list of scores. he has calculated the range and then realizes that one of the numbers was transposed. he switches its digits and then recalculates the range-which has not changed. which statement must be true about the new number? a) the new number was equal to the mean. b) the new number was the same as the original number. c) the new number was lower than the lowest number in the set. d) the new number was neither the lowest nor the highest number in the set.