Q4) Data of 100 student scores was recorded in a statstistics exam. The arithmetic mean and standard deviation of the data were 60 and 15 respectively. After checking, it was found that there was an error in input the score of 2 students. The incorrect scores were 27 and 40, while the :correct scores were 72 and 45. Thus * :The correct standard deviation is 11.1678 11.2541 12.3768 12.5241 none of all above O

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