# Chebyshev's Theorem,

A distribution has a mean of 260 and a standard deviation of 18. Using Chebyshev's Theorem, what is the percentage of data values that will fall in the range of 215 to 305?

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because,

<x> = mean = 260

<x> - X1 = 260 - 215 = 45 = d

and,

X2 - <x> = 305 - 260 = 45 = ...

#### Solution Summary

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$2.19