Answer the following questions: (i) The Newmann-Keuls test is more sensitive than the Tukey test (true or false): (ii) To make all pairwise comparisons after the data has been collected for an experiment we use the Scheffe test (true or false): (iii) A factor is nested in a second factor when each level of the first factor appears all levels of the second (true or false): (iv) When the effects of one independent variable are different, depending on the levels of the other independent variable, we have a effect