Has the percentage of registered nurses earning more advanced academic degrees changed? in 1980, 55% of registered nurses had a high school diploma as their highest level of education, 18% had an associates degree, 22% had a bachelor's degree, and 5% had a master's degree. in 2012, a random sample of 800 registered nurses was obtained. Of those sampled, 111 had a high school diploma as their highest educational degree, 295 of them had an associate's degree, 289 had a bachelor's degree, and 105 of them had a master's degree. At the 5% significance level, what conclusion can be reached.