Assume the cholesterol levels in a certain population have mean μ= 200 and standard deviation σ = 24. The cholesterol le

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answerhappygod
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Assume the cholesterol levels in a certain population have mean μ= 200 and standard deviation σ = 24. The cholesterol le

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Assume the cholesterol levels in a certain population have mean μ= 200 and standard deviation σ = 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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