For a particular number of degree of freedom entry the criti

For a particular number of degree of freedom entry the critical value of t corresponding to the probability (1-a) and a specified supper-tail array ((a)

Solution

this is the table for t-distribution, it is used to compute critical value for the testing problem. Suppose in a testing problem the test statistic T has t- distribution with df=23 and we want upper tail test, then at 0.05 level of signicance the critical value is 1.7139.