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.
Definition of Sarcasm. Sarcasm is derived from French word sarcasmor and also from a Greek word sarkazein that means âtear fleshâ or âgrind the teethâ. Somehow, in simple words it means to speak bitterly. Generally, the literal meaning is different than what the speaker intends to say through sarcasm.