Does STAB affect the chance to inflict a status effect

The Power of an attack directly correlates to how much damage you deal, because its presence in the damage formula is entirely multiplicative. So, an attack with 120 power will do twice as much damage as one that has 60 power. The same goes with your corresponding attack stat: a Pokemon with 100 Attack will do twice as much damage as one with 50 Attack when using the same attack on the same target.

STAB has operated consistently since Gen 1 so this applies to all of the games. It increases the Power of an attack by 50% if it matches one of your types. 60 becomes 90, for instance.

Technician increases the Base Power of an attack by 50% if its Power is 60 or less. So the most you get is boosting an attack at 60 power to 90. This occurs before STAB is calculated, so your Power would be 90 for STAB, boosting it to 135.

there are various rules concerning that the bulbapedia has the full list

• poison types cannot be poisoned (like steel and the immunity ability)
• paralyzed is not electric specific (glare and stun spore causes paralysis as well) and all types can be paralyzed
• freeze can also happen on all types but ice types are immune to ice caused freeze (the only other moves which can freeze are tri-attack and secret power)