Question: An IBM subcontractor was hired to make ceramic substrates that are used to distribute power and signals to and from computer silicon chips. Specifications require

An IBM subcontractor was hired to make ceramic substrates that are used to distribute power and signals to and from computer silicon chips. Specifications require resistance between 1.500 ohms and 2.500 ohms, but the population has normally distributed resistances with a mean of 1.978 ohms and a standard deviation of 0.172 ohms. What percentage of the ceramic substrates will not meet the manufacturer's specifications? Does this manufacturing process appear to be working well?

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