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2) Assume the cholesterol levels in a certain population have mean = 200 and standard deviation o= 24. The cholesterol levels for a random

2) Assume the cholesterol levels in a certain population have mean = 200 and standard deviation o= 24. The cholesterol levels for a random sample of n= 9 individuals are measured and the sample mean x is determined. What is the z-score for a sample mean x= 180? A. -3.75 B. -2.50 C. -0.83 D. 2.50

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