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
Assume the cholesterol levels in a certain population have mean μ= 200 and standard deviation σ = 24. The cholesterol le
-
- Site Admin
- Posts: 899603
- Joined: Mon Aug 02, 2021 8:13 am