Each of the following samples was obtained from a population with µ = 100 and σ = 10. Find
the z-score corresponding to each sample mean.
a. M = 95 for a sample of n = 4
b. M = 104 for a sample of n = 25
c. M = 103 for a sample of n = 100
1
Expert's answer
2019-05-01T11:09:57-0400
If X has a distribution with mean μ, and standard deviation σ, and is approximately normally distributed or n is large, then the sample mean M is approximately normally distributed with mean μ and standard error σ/n.
Comments
Leave a comment