The percentage of titanium in an alloy used in aerospace

Last updated: 4/2/2024

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 a Test the hypothesis H0 0 25 versus H1 0 25 using a 0 05 State any necessary assumptions about the underlying distribution of the data Find the P value b Explain how you could answer the question in part a by constructing a 95 two sided confidence interval for