Fill the blank

(a) A 283 2iv design has runs and factors of 2 levels each. (b) In a resolution IV design, a two-factor interaction is not aliased with but is possibly aliased with (c) For a 25 yi design, we can estimate factorial effects (besides the intercept). Each main effect is aliased with other factorial effects. (d) The fundamental principles for factorial effects are and (e) A central composite design using a 2% design and 3 center points has total runs