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//Caption: Two-Samples Tests
//One-tailed two-samples sign tests with binomial distribution
//Example9.12
//Page330
//Test 1: Ho: uX = uY or p = 1/2
// H1: uX> uY or p > 1/2
clear;
clc;
n = 9; //Number of observations of each sample
plus_signs = 6;
minus_signs = 3;
alpha = 0.05; //significance level
X = 5;////number of plus signs more than minus signs
p = 1/2;
q = 1-p;
[P,Q]=cdfbin("PQ",X,n,p,q);
disp(Q,'The binomial propability no. of plus signs > minus signs P(X>=6)=')
if (Q>alpha) then
disp('Since P(Q>=6) is more than the significance level of 0.05')
disp('It falls in the acceptance region and accpt Ho')
else
disp('Reject Null Hypothesis Ho')
end
//Result
//The binomial propability no. of plus signs > minus signs P(X>=6)=
//
// 0.2539063
//
// Since P(Q>=6) is more than the significance level of 0.05
//
// It falls in the acceptance region and accpt Ho
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