What is the confidence interval for the average torque

Reference no: EM131405157

An assembly process includes a torque wrench device that automatically tightens compressor housing bolts; the device has a known process standard deviation of σ = 3 lb-ft in the torque applied.

A simple random sample of 35 nuts is selected, and the average torque to which they have been tightened is 150 lb-ft. What is the 95% confidence interval for the average torque being applied during the assembly process?

Reference no: EM131405157

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