Division (6) The parameters, μ 2, ω 1 and ω 2 shall be equal to the following:F1

• $${\mu }_2=\mu \times N\left(\frac{\ln \left(b_2\right)-\theta }{\eta }-\eta \right)+b_2\times N\left(-\frac{\ln \left(b_2\right)-\theta }{\eta }\right)$$
• $${\omega }_1=\omega \times N\left(\frac{\ln \left(b_1\right)-\theta }{\eta }-2\times \eta \right)+b_2^1\times N\left(-\frac{\ln \left(b_1\right)-\theta }{\eta }\right)$$
• $${\omega }_2=\omega \times N\left(\frac{\ln \left(b_2\right)-\theta }{\eta }-2\times \eta \right)+b_2^2\times N\left(-\frac{\ln \left(b_2\right)-\theta }{\eta }\right)$$

where:

1. (a)

   N denotes the cumulative probability function of the normal distribution;

2. (b)

   ln denotes the natural logarithm;

3. (c)

   the parameters θ and η are equal to the following:

   • $$\theta =\mathrm{2ln}\mu -\frac{1}{2}\ln \omega$$

   • $\eta =\sqrt{\ln \omega -\mathrm{2ln}\mu }$.