Find the Critical Value $$\alpha = 0.05$$

Essay

Find the critical value. Assume that the test is two-tailed and that n denotes the number of pairs of data.
-A college administrator collected information on first-semester night-school students. A random sample taken
of 12 students yielded the following data on age and GPA during the first semester. Do the data provide sufficient evidence to conclude that the variables age, x, and GPA, y, are correlated? Apply
a rank-correlation test. Use $$\alpha = 0.05$$