When installing a bath faucet, it is important to
Chapter 16, Problem 10(choose chapter or problem)
When installing a bath faucet, it is important to properly fasten the threaded end of the faucet stem to the water supply line. The threaded stem dimensions must meet product specifications, otherwise malfunction and leakage may occur. Authors of Improving the Process Capability of a Boring Operation by the Application Of Statistical Techniques (Intl. J. Sci. Engr. Research,Vol. 3, Issue 5, May 2012) investigated the production process of a particular bath faucet manufactured in India.The article reported the threaded stem diameter (targetvalue being 13 mm) of each faucet in 25 samples of size4 as shown here:
Calculate control limits based on using the sample range to estimate s. Does the process appear to be in control?
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