Arkham Horror Probability Tables version 2.0
I created an exhaustive series of 16 tables showing the odds for rolling 1 - 20 dice with minimums of 1 to 5 successes. Each table reflects one of the 16 basic die-roll situations and/or their combinations (e.g., base odds, shotgun, specialized skills, Mandy Thompson ability, etc.).
I submitted an 18 page pdf (16 dice only for readability) to BGG and will add a link to it on the Wiki when it's posted.