3 states - Never broken, repaired and discard. P( phone being repair) = 0.75 Status. P(breakdown) Never broken. 0.1dt Repair. 0.2dt Then not understood how they derived rates for the transitions. Never broken to repair = 0.075 Never broken to discard= 0.025 How?
Hi deepakraomore, Have you got ASET or the Revision Notes? I strongly recommend CT4 ASET for really helping you answer the questions on the last 8 papers. Your question here looks exactly the sort that would be cleared up well by our explanation in ASET. Of course, you can still get help here on particular questions, from the tutors, or better still from fellow students. I want to help you with this question but, at the moment, I'm struggling because April 2015 Question 8 is about dividing data into homogeneous classes when undertaking mortality investigations. Did you mean this qeustion? John
