Question

Given a population with a mean of µ = 230 and a standard deviation σ = 35, assume the central limit theorem applies when the sample size is n ≥ 25. A random sample of size n = 185 is obtained. Calculate σx⎯⎯

Answer #1

Solution :

Given that,

mean = = 230

standard deviation = = 35

n = 185

_{}
=
= 230

_{}
=
/
n = 35 /
185 = 2.5733

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