4. A statistics class contains 50 students at the beginning of the semester. On the first exam, the average score is 83 and the SD of the scores is 10. One student gets a 20 on the exam and decides to drop the course. (a) What is the average exam score among the remaining 49 students? Answer: (b) How does the SD of the scores among the remaining 49 students compare to the original SD? (Circle one) It will be smaller than 10 It will be larger than 10 It will stay the same Explain your reasoning:

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