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OpenStudy (anonymous):
the results of a blood test at a medical lab are normally distributed with a mean of = 60 and standard deviation of 15. how low must a score be to lie in the lowest 5 % of the results
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OpenStudy (anonymous):
z = (value - mean)/(standard deviation) = (value-60)/15 z< -1.65 represents the lowest 5% that should help.
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