Supply Chain, Supply Chain Management, Logistics, Statistics, Lean Six Sigma.
population mean range [µ-b, µ+b] with a confidence of 90%. Equations— (Image by Author) And we know by the construction of the unit normal distribution that for P(-z≤Z≤z) = 0.9, we have z = 1.64 Finally, we can get our estimated range, or the population mean Equations — (Image by Author) Final