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Two different statistics classes take an exam. The first class has a mean grade of 72.4 with a standard deviation of 11.6. The second class also has a mean grade of 72.4 with a standard deviation of 9.5. Which is a true statement about the spread of the data of these two exams?. The test scores from the second class are more spread out than those of the first class The test scores from the first class are more spread out than those of the second class The test scores from both classes are spread equally Impossible to tell just from looking at the statistics