What is Pr(Z < 0.5)? Cardiovascular Disease Because serum cholesterol is related to age and sex, some
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What is Pr(Z < 0.5)?
Cardiovascular Disease
Because serum cholesterol is related to age and sex, some investigators prefer to express it in terms of z-scores. If X = raw serum cholesterol, then Z = X – m / s, where μ is the mean and σ is the standard deviation of serum cholesterol for a given age–gender group. Suppose Z is regarded as a standard normal random variable.
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