Log-normal distribution (EN)

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**Rumus**
$X\sim \ln\mathcal{N}(\mu,\,\sigma^2)$	$P(x_{1}\leq X\leq x_{2})=\int_{x_{1}}^{x_{2}}\frac{1}{x\sqrt{2\pi }.\sigma }.e^{-\frac{(\ln x-\mu )^{2}}{2\sigma ^{2}}}$
$E(X)=e^{\mu+\sigma^2/2}$	$D(X)=(e^{\sigma^2}-1) e^{2\mu+\sigma^2}$
$\gamma _{1}=(e^{\sigma^2}+2) \sqrt{e^{\sigma^2}-1}$	$\gamma _{2}=e^{4\sigma^2} + 2e^{3\sigma^2} + 3e^{2\sigma^2} - 6$

.The specified data is not correct. (EN)