Question: Fission tracks are trails found in uranium-bearing minerals, left by fragments released during fission events. The article Yo-yo Tectonics of the Nigde Massif During Wrenching

Fission tracks are trails found in uranium-bearing minerals, left by fragments released during fission events. The article “Yo-yo Tectonics of the Nigde Massif During Wrenching in Central Anatolia” (D. Whitney, P. Umhoefer, et al., Turkish Journal of Earth Sciences, 2008:209–217) reports that fifteen tracks on one rock specimen had an average track length of 13 μm with a standard deviation of 2 μm. Assuming this to be a random sample from an approximately normal population, find a 99% confidence interval for the mean track length for this rock specimen.

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