Saved Bookmarks
| 1. |
Define standard normal variable and write its probability density function. |
|
Answer» If X is normal variable with mean = µ and standard deviation = σ, then the random variable Z = \(\frac{X−μ}σ\) is called the standard normal variable. It is free from units of measurement. The probability density function of Z is as follows : f(z) = \(\frac{1}{\sqrt{2π}}e^{-\frac{1}{2}z^2}\), – ∞ < z < ∞ |
|