Instruction: Read the following scenarios and answer the questions. "A generator manufacturer found that the smallest, least expensive generator that they manufacture lasts, on average, 2000 hours with a standard deviation of 150 hours. At least what percent of the generators last between 1550 and 2450 hours?" 1. What is the mean? 2000 hours (Click to view hint) 2. What is the standard deviation? 150 hours 3. 1550 is standard deviations below + the mean and 2450 is standard deviations above + the mean. (Click to view hint) 4. Based on Chebyshev's Theorem, what percent of the generators can the company expect to last between 1550 and 2450 hours? The company can expect at least + (Round to the nearest tenth.) of the generators to last between 1550 and 2450 hours. (Click to view hint)