How can temperature affect a chemical reaction?

Yes. Exothermic reactions are favoured at low temperature and endothermic reactions at high temperature. Low temperature doesn't mean 0 K. A certain minimum temperature is necessary to have an...

Yes, this is a true statement.

Yes it does!.

in an exothermic reaction if the temperature is introduced the reaction will reduce and in an endothermic reaction if temprature is introduced the reaction will increase

An increase in temperature means there is an increase in energy present, which naturally, would speed up a chemical reaction.