Hi everyone, I got a question about the POFOD.
Q1: Implementing modules by two way. 1: 4 errors in 1000 test cases; 2: 6 errors in 1200 test cases.
I got the P1=4/1000=0.004 and the P2=6/1200=0.005. Is the method of P2 more reliable?
Q2: Now implement modules by 1, if 1 failed 2 will take over. What's the POFOD?
I got two answers for the POFOD.
1: P=P1 * P2=0.004*0.005=0.00002
I am confusing with the two answers, could any one tell me which one is correct?
Thanks in advance!