Answer:
All mean of GMAT scores might not be equal.
Reject null hypothesis.
Step-by-step explanation:
ANOVA is a statistical technique which analyzes and estimates different procedures to find variance among them. For the given GMAT scores the null hypothesis is considered as all means of GMAT scores are equal and the alternative hypothesis is all mean of GMAT score is not equal. Using excel the ANOVA technique is used to reach the conclusion.