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Dear tutors, I really need ur help ASAP. I am trying to finish my hw, but facing a hard time. I am really sorry to

Dear tutors,

I really need ur help ASAP. I am trying to finish my hw, but facing a hard time. I am really sorry to ask this. But I only have 1+ and / 30) + h+r/s/. Please share your work in the time. Appreciate,

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12. Calculate the true standard deviation of the diameter of a large batch of copper bars to a confidence level of 98% if the measured standard deviation in the diameter for a sample of 20 bars is 0.8 mm

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