Would we be required to calculate N(-d1) , N(-d2), N(-e1), N(-e2) from values in normal distribution table?

Off the top of my head I think the LOS says “Explain”, so you won’t have to do calculations with the credit models.

Hehe yes it’s annoying. Since we have to calculate probability of default, expected loss and PV of expected loss, it seems like we can’t do without either knowing how to calculate or understanding the above. Hopefully, its just the latter.