www.gusucode.com > stats 源码程序 matlab案例代码 > stats/ComputeStudentsTCdfExample.m
%% Compute Student's _t_ cdf % % Copyright 2015 The MathWorks, Inc. %% mu = 1; % Population mean sigma = 2; % Population standard deviation n = 100; % Sample size rng default % For reproducibility x = normrnd(mu,sigma,n,1); % Random sample from population xbar = mean(x); % Sample mean s = std(x); % Sample standard deviation t = (xbar - mu)/(s/sqrt(n)) %% p = 1-tcdf(t,n-1) % Probability of larger t-statistic %% % This probability is the same as the _p_ value returned by a _t_ test of % the null hypothesis that the sample comes from a normal population with % mean $\mu$ [h,ptest] = ttest(x,mu,0.05,'right')