Base % chance to hit? and Global Damage Resistance for vehicle types?

I'm new.
I see a lot of Abilities that modify the % chance to hit enemies or the % combat defense, but I see no number specifying the base chance to hit.

Does anyone know what it is?

For example, IF you have two ships with no % to hit modifier and no % combat defense modifier and no distance penalty THEN what is the % chance they will hit each other during a single attack?

Also, the Range Penalty seems to be a whole number instead of a percent modifier. Does anyone know how to correlate the two together so that I can tell what % miss chance each range increment represents?

For example, IF a weapon hits 50% of the time at point blank range and it shows -35 at range 60 ls THEN what is the % chance to hit at range 60?

Thank you very much!

While I'm here...

Is there any way to assign a global Damage Resistance to an entire size category of ship so that ALL damage is first reduced by any applicable shields then reduced by this global-size dependent Damage Resistance then reduced further by any Armor dependent Damage Resistance?

For example: Fighter Medium given Damage Resistance 20; Fighter Large given Damage Resistance 30; Frigate given Damage Resitance 40

So far, the only solution I have been able to come up with is to have the Armor provide 90%+ of the total structure points (hit points) and then assign the Damage Resitance to the Armor. This way, the Damage Resistance applies to most of the structure points (hit points).
THEN, I have each Type of Armor set at a different Damage Resistance.
THEN, I have each Type of Armor only useable at a minumum kT size.
It's an ugly workaround and I would love to just assign each vehicle a global Damage Resistance.
Thanks!