Mathematics, 28.02.2020 00:53 shelbs433
A steel mill’s milling machine produces steel rods that are supposed to be 5 cm in diameter. When the machine is in statistical control, the rod diameters vary according to a Normal distribution with mean µ = 5 cm. A large sample of 150 rods produced by the machine yields a mean diameter of 5.005 cm and a standard deviation of 0.02 cm.
Construct a 99% confidence interval for the true mean diameter of the rods produced by the milling machine. Follow the inference toolbox.
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