When t0 = 0.18, which more-and less so 1.746 1.746 accepted assumption that H0: m1 = m2.That is the conclusion that both the circuit board needs electricity. No different.
When t0 = 0.18, which is less than 1.746 -1.746 and therefore accept the hypothesis that H0: m1 = m2 is concluded that both circuits. Needs electricity Not different enough
When t0 = 0.18 which more - 1.746 and less 1.746 recognizes the main hypotheses that H0: M1 = m2.It is concluded that the circuit, both need electricity. No different.