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An educator is concerned with the large range of exam scores from students on a 100-point hourly History exam. Which of the following is the

An educator is concerned with the large range of exam scores from students on a 100-point hourly History exam. Which of the following is the most reasonable value that would be expected for the standard deviation when a group of 50 students takes the exam, and the highest grade earned on the exam among the students is 99, with a lowest grade earned of 41?
1. s = 15
2. s = -15
3. s = 0
4. s = 58

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