www.gusucode.com > stats 源码程序 matlab案例代码 > stats/OneSidedzTestExample.m
%% One-Sided z-Test %% % 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 = 65| and standard deviation |sigma = 10|, against the alternative % that the mean is greater than 65. [h,p] = ztest(x,65,10,'Tail','right') %% % The returned value of |h = 1| indicates that |ztest| rejects the null % hypothesis at the default 5% significance level, in favor of the alternative % hypothesis that the population mean is greater than 65.