The following data represent failure times, in minutes,

Chapter , Problem 21

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The following data represent failure times, in minutes, for two types of electrical insulation subject to a certain voltage stress. Type I 212, 88.5, 122.3, 116.4, 125, 132, 66 Type II 34.6, 54, 162, 49, 78, 121, 128 Test the hypothesis that the two sets of data come from the same exponential distribution.

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