Essay
A sample of 49 measurements of tensile strength for roof hangers are calculated to have a mean of 2.45 and a standard deviation of 0.25.(Units are Newton's per square meter.)
a.Determine the 95% confidence interval for mean tensile strength for all hangers.
b.Interpret this confidence interval.
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a. LCL = 2.38 and UCL = 2.52 (Newton's p...View Answer
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