Independent random samples of 30 faculty members in private universities and 28 faculty members at public universities were taken to determine if the salaries at private universities are greater than the salaries at public universities. Given the testing statistics below, determine if the data provides sufficient evidence to conclude that the salaries at private universities are greater than the salaries at public universities, at the 5 % significance level. H 0 : 1 2 H a : 1 > 2 t = 1.389 t 0.05 = 1.672