In Testing the Hypotheses $H _ { 0 } :$ The Two Population Locations Are the Same

Essay

In testing the hypotheses: $H _ { 0 } :$ The two population locations are the same $H _ { 1 } :$ The two population locations are different,
with data drawn from a matched pairs experiment, the following statistics are calculated: $n = 40$ , $T ^ { + } = 238$ , $T ^ { - } = 582$ .
a. Which test is used for testing the hypotheses above?
b. What is the p-value of this test?