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%% Anderson-Darling Test for Extreme Value Distribution %% % Load the sample data. Create a vector containing the first column of the % students' exam grades data. load examgrades x = grades(:,1); %% % Test the null hypothesis that the exam grades come from an extreme value % distribution. You do not need to specify values for the population parameters. [h,p] = adtest(x,'Distribution','ev') %% % The returned value of |h = 0| indicates that |adtest| fails to reject % the null hypothesis at the default 5% significance level.