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?
If score of 3,540 points is 2 standard deviations above the mean score of 3,110, then: 3,110 + 2 s= 3,540 2 s = 3,540 - 3,110 = 430 s = 430 : 2 s = 215 Answer: A) The standard deviation is 215.
