www.gusucode.com > stats 源码程序 matlab案例代码 > stats/ZTestForAHypothesizedMeanExample.m
%% z-Test for a Hypothesized Mean %% % 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 data comes from a normal distribution % with mean |m = 75| and standard deviation |sigma = 10|. [h,p,ci,zval] = ztest(x,75,10) %% % The returned value of |h = 0| indicates that |ztest| does not reject the % null hypothesis at the default 5% significance level.