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please solve A psychology instructor asked the 100 students in her class to rate their intelligence on a scale of 1 to 10. The ratings

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A psychology instructor asked the 100 students in her class to rate their intelligence on a scale of 1 to 10. The ratings follow. Rating 5 6 7 8 9 10 Number 24 18 38 12 4 4 What is the variance of the intelligence scores? 1.66 1.71 1.29

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