Mathematics, 19.10.2019 03:30 sarahcn9876

Consider a cylindrical engine part manufacturer that has designed a new machine to reduce the variance of the outside diameters of their product. a random sample of ? ? = 25 outside diameters produced by this machine has a mean of ? ? * = 3 and a variance of = 0.00014. assume that the population of all cylindrical engine part outside diameters that would be produced by the new machine is normally distributed, and let denote the variance of this population. find a 95% confidence interval for

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Consider a cylindrical engine part manufacturer that has designed a new machine to reduce the varian...