Homework8_S11

# Homework8_S11 - STAT 496, Spring 2011 Homework Assignment...

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STAT 496, Spring 2011 Homework Assignment #8, Due by Tuesday, May 3 1. A study is done on the time to failure for turbine engine windings. The engine windings are put on test at high temperature (100 o C) and their times to failure (hours) are recorded. Several of the engines have censored times because they were removed from the study prior to failing. Below are the data for the forty engines that were tested. With the exception of plotting the survivor function, this problem should be done by hand. Time Censor? Time Censor? Time Censor? Time Censor? 6 No 25 No 38 No 62 Yes 10 No 27 No 39 No 64 Yes 11 No 29 No 40 No 68 No 14 No 30 No 45 No 69 No 16 No 32 No 45 No 72 No 18 No 35 No 46 No 76 No 18 No 36 No 46 No 77 Yes 18 No 36 No 47 No 84 Yes 22 No 37 No 48 No 97 Yes 24 No 38 No 54 No 101 Yes a) Construct an estimate of the survivor function and plot this. Do the calculations for the probability of survival by hand. It will be helpful if you construct a table similar to the one for the censored data bearing example given in Lecture 26. You may use

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## This note was uploaded on 02/11/2012 for the course STAT 496 taught by Professor Staff during the Spring '08 term at Iowa State.

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Homework8_S11 - STAT 496, Spring 2011 Homework Assignment...

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