1 The appropriate critical value will be selected from the t distribution again depending on the specific alternative hypothesis and the level of significance.  The third factor is the level of significance. The level of significance which is selected in Step 1 (e.g., Î± =0.05) dictates the critical value. For example, in an upper tailed Z test, if Î± =0.05 then the critical value is Z=1.645.
Definition of sarcasm for English Language Learners. : the use of words that mean the opposite of what you really want to say especially in order to insult someone, to show irritation, or to be funny.
From Wikipedia, the free encyclopedia. Sarcasm is a sharp, bitter, or cutting expression or remark; a bitter gibe or taunt.. Sarcasm may employ ambivalence, although sarcasm is not necessarily ironic. The distinctive quality of sarcasm is present in the spoken word and manifested chiefly by vocal inflections. The sarcastic content of a statement will be dependent upon the context in which it appears.