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4. The Empirical Rule states that for data having a distribution that is approximately bell shaped, about 68% of all values fall within 1 standard deviation of the mean, about 95% of all values fall within 2 standard deviation of the mean, and about 99.7% of all values fall within 3 standard deviation of the mean. Find the intervals that contain data that lies within 1, 2 and 3 standard deviations from the mean