It is suspected that the environmental temperature in which batteries are activated affects their life. Thirty homogeneous batteries were tested six at each of five temperatures, and the data are shown below (activated life in seconds). Analyze and interpret the data. (C. R. Hicks, Fundamental Concepts in Design, of Experiments Holt Rinehart and Winston New York,1973)

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°C) Temperature (°C) 25 50 75 0. 60 61 60 60 100 70 65 66 60 64 65 65 55 55 57 54 72 72 72 70 68 72 72 (68 77 54 60 60 56 77 69