Probability

A Product of Lognormals

Difficulty
xxxx xxxxxxxxxxx xxxxxx xxxxxxxxx \(x_x,\xxxxx,x_x\) xxx xxxxxxxxxxx xxxxxxxxxxx, xxxx xxxx \(\xx x_x\) xxxxxx xxxx \(x.x\) xxx xxxxxxxx \(x\). xxxxxxxxxxxxx xxxx xx xxx xxxxxxxxxxx xxxx xxxxx xxxxxxx xx xx xxxxx \(xx\)?

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