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find the answer SS 2. Samples of too types of electric light bulbs were tested for length of life and following data were obtained; Type

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SS 2. Samples of too types of electric light bulbs were tested for length of life and following data were obtained; Type I Type II 13 at sample number 1 = 8 na = 7 Sample means my = 1234hrs 5 - 1086 4rs Sample S-0 81 = 36 yrs Sa = 40 hrs Is the of in the means sufficient to warrant that type I is superior to type If regarding length of life

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