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Answer to Question #308263 in Statistics and Probability for rylle
Question #308263
Given that the mean weight of senior high school students is 65kg with a standard deviation of 10. What is the percentile rank of a student with a weight of 55 kg?
Expert's answer
"z=\\frac{55-65}{10}=-1."
"P(Z<-1)=0.1587."
Percentile rank is 15.87%.
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