Solution: (i) is TRUE The pooled SD is used to compute the standard error of the difference used to compute multiple comparison tests. (ii) is too TRUE In statistics, the Bonferroni correction is one of several methods used to counteract the problem of multiple comparisons. Bonferroni correction=
Therefore, It is TRUE, a Bonferonni-corrected alpha level of 0.0167 to control the type I error rate for the overall inference to 5%.