Two essential features of all statistically designed experiments are

6. Two essential features of all statistically designed experiments are (2 Points) O use enough subjects; always have a control groups O always have a placebo group; use the double - blind method O use a block design; use chance to assign subjects to treatments O compare several treatments; use the double - blind method O compare several treatments; use chance to assign subjects to treatments

6. Two essential features of all statistically designed experiments are (2 Points) O use enough subjects; always have a control groups O always have a placebo group; use the double – blind method O use a block design; use chance to assign subjects to treatments O compare several treatments; use the double – blind method O compare several treatments; use chance to assign subjects to treatments

Also Check This A person does 100 joules of work in pulling back the string of a bow.