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.
sarcasm noun [U]. âº literature âremarks that âmean the âopposite of what they say, made to âcriticize someone or something in a way that is âamusing to âothers but âannoying to the âperson âcriticized: âbiting/âheavy sarcasm. sarcastic adjective us /sÉrËkaesÂ·sÉrËkÃ¦s/ âº tÉªk âsarcastic. comments