The tensile strength of a welded joint used in construction has to be at least equal...
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The tensile strength of a welded joint used in construction has to be at least equal to 40 tons per square inch (ton/in.2). A random sample of 100 joints welded by a welding machine yielded the following estimates of the parameters of the distribution of the tensile strengths: ➤ Mean = 65 ton/in.². Standard deviation = 8.2 ton/in.² Compute the Cp index and estimate the proportion of defectives generated by the machine, assuming that the distribution of the tensile strengths is normal. The tensile strength of a welded joint used in construction has to be at least equal to 40 tons per square inch (ton/in.2). A random sample of 100 joints welded by a welding machine yielded the following estimates of the parameters of the distribution of the tensile strengths: ➤ Mean = 65 ton/in.². Standard deviation = 8.2 ton/in.² Compute the Cp index and estimate the proportion of defectives generated by the machine, assuming that the distribution of the tensile strengths is normal.
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Calculating the specification limits and determining the process variability are necessary in order to calculate the Cp index and estimate the percent... View the full answer
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