Mathematics, 27.09.2019 02:00, salvadorperez26

The percentage of titanium in an alloy used in aerospace castings is measured in 51 randomly selected parts. the sample standard deviation is s = 0.36. construct a 95% two-sided confidence interval for σ. assume population is approximately normally distributed. round your answers to 4 decimal places.

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The percentage of titanium in an alloy used in aerospace castings is measured in 51 randomly selecte...