Assume the cholesterol levels in a certain population have mean μ= 200 and standard deviation σ = 24. The cholesterol le
Posted: Mon Dec 06, 2021 7:53 am
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
A. –3.75
B. –2.50
C. −0.83
D. 2.50