Experimental results show that the value is sufficient to reject the main sommutithan (H0) if not all 4 surface roughness and tolerances surface roughness values (H1), four different cases.
The results show that the value sufficient to reject the hypothesis (H0), the smooth surface of the four different cases, and accept (H1), the smooth surface of the four different cases.
The experimental results show that, enough to deny the main hypothesis (H0) the surface roughness and 4 cases not different and accept (H1) the surface roughness and 4 case is different.