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Mathematics, 24.08.2019 22:30 Savagepanda911

Priya is playing a game where she earns online badges for scoring higher than the mean score on a level. after the tenth level, she scores 3,540 points, which is 2 standard deviations above the mean score of 3,110 points.
what is the standard deviation of scores for the tenth level?
a.)215
b.)311
c.)354
d.)430

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