\fFour cells of components were put on test at temperatures of 110C, 120C, 130C, and 140C to model a failure mechanism with an Arrhenius acceleration model. The lowest temperature cell had 100 units on test; all other cells contained 50 units. Readouts were taken at 24, 48, 96, 150, 500, and 1000 hours. The test ended at the last readout, and the data are summarized below. Readout Hours 110C .Cell 120C _Cell 130C Cell 140C Cell New Fallures New Fallures New Fa1lures New Fallures 24 1 2 48 1 1 96 3 3 1 50 1 1 500 3 10 1000 8 10 Unfailed 33 23 Use a Weibull life distribution and estimate 6', AH, and the use CDF at 40,000 hours at a use temperature of 60C. Repeat the analysis using a lognormal distribution. Which distribution appears to t the data better? Use MLE ts and look at probability plots