Stat 101 As The Purchasing Agent Of Your Company

As the purchasing agent of your company you are deciding what type of Xerox machine to buy for your company. You have narrowed your choices to brand X and brand Y. which have been recommended to you by two friends. Your selection criteria is durability. Your first friend tells you that the 8 brand x machines in her company have an average life-time of 200 days, with a standard deviation of 9 days. Your other friend tells you that the average life-time of the 6 machines in her company is 210 days with a standard deviation of 6 days. Which machine would you pick?

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STAT 101 As the purchasing agent of your company

Question
As the purchasing agent of your company you are deciding what type of Xerox machine to buy for your company. You have narrowed your choices to brand X and brand Y. which have been recommended to you by two friends. Your selection criteria is durability. Your first friend tells you that the 8 brand x machines in her company have an average life-time of 200 days, with a standard deviation of 9 days. Your other friend tells you that the average life-time of the 6 machines in her company is 210 days with a standard deviation of 6 days. Which machine would you pick?

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