highly significantp<10 −36
The average sum is much smaller for Model 1 than for Model 4 and the differences between natural and simple design are highly significant (p<10 −36 , Welch's t -test).
The average sum is much smaller for Model 1 than for Model 4 and the differences between natural and simple design are highly significant (p<10 −36 , Welch's t -test).