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A Set of Data Has a Mean of 80 and a Standard

Question 16

Multiple Choice

A set of data has a mean of 80 and a standard deviation of 5 . To determine two values that contain at least $\frac{8}{9}$ of the data, we use:

A) Chebyshev's theorem.
B) the coefficient of variation.
C) $z$ -scores.
D) the empirical rule.

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