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//Chapter 07: Discrete Probability
clc;
clear;
s_total_msg=2000 //spam messages total
spam_msg=250 //occurrence of 'Rolex' in spam
nspam_msg=5 //occurrence of 'Rolex' in not know to be spam
ns_total_msg=1000//not spam messages total
threshold=0.9
p=spam_msg/s_total_msg
q=nspam_msg/ns_total_msg
r=p/(p+q)
if r>threshold then
disp(r,'R=')
disp('Reject')
end
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