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| Math Central | Quandaries & Queries |
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Question from Shawn, a parent: For a normal distribution of u=654.00 and o=138.00. |
Shawn,
You have the normal distribution with mean μ = 654.00 and standard deviation σ = 138.00. Convert to the standard normal distribution using
Use the value of Z obtained and your standard normal table to find
Pr(Z < Zo)
The percentile rank is this probability, expressed as a percentage.
I hope this helps,
Harley
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