I'm no good with probability distributions 
Basically I'm trying to figure out what damage range I need to
95% 2/3hko each Oblivion monster with Cannon
95% 4/5/6hko each Oblivion monster with Torpedo
95% 3hko Skeles with Torpedo
95% 1hko Skeles with Cannon (if possible o_o) and 2hko with Torpedo
1hko is quite easy to figure, and so is 100% xhko. But I don't know how to calculate points on the bell curve. 100% xhko is overdoing it because it always reports a number way beyond what you actually need.
Basically I'm trying to figure out what damage range I need to
95% 2/3hko each Oblivion monster with Cannon
95% 4/5/6hko each Oblivion monster with Torpedo
95% 3hko Skeles with Torpedo
95% 1hko Skeles with Cannon (if possible o_o) and 2hko with Torpedo
1hko is quite easy to figure, and so is 100% xhko. But I don't know how to calculate points on the bell curve. 100% xhko is overdoing it because it always reports a number way beyond what you actually need.