Openning Umbral engrams for Wolftone Draw, and in theory u should recive 50% hand cannons and 50% bows, but it seems like 75%/25%. I have opened 10 engrams for 1 day and recived 9 handcannons and 1(!) bow. Maybe something is broken here. It can't be unluck only. How i should roll my 576 bow with archer tempo if i don't even recive bows?:(
10 is a bad samplesize (too small).
Let A be the chance of getting the handcannon and 1-A the chance for getting the bow.
Then the chance of getting exactly 9 HCs from any sequence of 10 engrams is:
A^9*(1-A)*(10 choose 9)
Now assuming A is 0.5 then the above written rounds to 0.098%
Is this unlikely to happen to some guardian considering this is a chance calculated for any sequence of 10 engrams (meaning opening 100 engrams you'd have 91 such sequences (eg 1-10, 2-11,3-12 and so on) and there are some hundred thousand(?) players? Probably not
disclaimer: I am terrible at probabilities. If there are flaws, please do tell