Question
for a population of size N = 120 with a mean of 7.5 and a standard deviation of 1.5, find the estimated standard error of the mean for the following sample sizes:
- ) n = 9 ii) n = 25
Answer :
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Estimated Standard Error of the Mean (SEM) is calculated using the formula: \[ \text{SEM} = \frac{\sigma}{\sqrt{n}} \] where: - \(\sigma = 1.5\) (standard deviation) - \(n\) is
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