The life of a particular type of generator is thought to be influenced by the material used in its construction and also by the temperature at the location where it is utilized. The following table represents lifetime data on 24 generators made from three different types of materials and utilized at two different temperatures. Do the data indicate that the material and the temperature do indeed affect the lifetime of a generator? Is there evidence of an interaction effect?

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Temperature Material 10C 18C 1 135, 150 50,55 176,85 64,38 2 150, 162 76,88 171, 120 91,57 3 138, 111 68, 60 140, 106 74,51