z=\frac{\left(x-\mu\right)}{\frac{\sigma}{\sqrt{n}}}
Z: critical value
\sigma\colon : population standard deviation.
n: sample size
\mu\colon population mean
Frequently asked questions (FAQs)
What is the variance of the data set {12, 15, 18, 21, 24, 27, 30}?
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What is the value of 2 raised to the power of 5, minus the square root of 144, divided by 3^2?