Janet Grillo is unhappy with her current high-speed Internet service. She is considering switching to another Internet service provider. Janet has narrowed her choices to three fictitious Internet service providers and has collected the following data in hours on mean time between failures (MTBF) and mean time to repair (MTTR) for the three service providers. There is not much difference in the cost and speed service among the three Internet service providers. Given this information, which Internet service providers should Janet choose? 

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Internet Service Provider MTBF MTTR Horizon 25 Star Cable 45 Sky Reach 70 LO