GMAT Scores a Recent College Graduate Is in the Process of Process

Essay

GMAT Scores
A recent college graduate is in the process of deciding which one of three graduate schools he should apply to.He decides to judge the quality of the schools on the basis of the Graduate Management Admission Test (GMAT)scores of those who are accepted into the school.A random sample of six students in each school produced the following GMAT scores.Assume that the data are normally distributed with equal variances for each school. ​ ​
-{GMAT Scores Narrative} Can he infer at the 10% significance level that the GMAT scores differ among the three schools?