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on a normal distribution, what is the percentile rank for a score of 26 when the mean score is 20 and the standard deviation is

on a normal distribution, what is the percentile rank for a score of 26 when the mean score is 20 and the standard deviation is 3?

a. 99.5%

b. 75%

c. 97.5%

d. 47.5%

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