Question: complete solution and computerized answer 4. The percentage of titanium in an alloy used in aerospace castings is measured in 51 randomly selected parts. The

complete solution

and computerized answer

4. The percentage of titanium in an alloy used in aerospace castings is measured in 51 randomly selected parts. The sample standard deviation is s = 0.37. Construct a 95% two-sided confidence interval for the standard deviation

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