Answer to Question #343151 in Statistics and Probability for Hehe

Statistics and Probability

Question #343151

Given a population of 5000 score with mean μ=86 and σ=10. How many scores are below 56?

Expert's answer

"P(X<56)=P(Z<\\dfrac{56-86}{10})"

"=P(Z<-3)\\approx0.00135"

"0.00135\\cdot 5000=7"

7 scores are below 56.

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