Suppose a random sample of 25 measurements is taken from a population with mean 17 and...
Suppose a random sample of 25 measurements is taken from a population with mean 17 and variance 100. The variance of the sample mean is
Homework Answers
Solution:
Variance of sample mean = σ^2/n
WE are given
σ^2 =100
n = 25
Variance of sample mean = 100/25 = 4
The variance of the sample mean is 4.
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