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Required information

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Harbortown Marine Products $($HMP$)$ manufactures and sells various fixtures for boat cabins. One fixture uses a specialized fitting that is not used in any other HMP product. The management of HMP has considered outsourcing the filting for several years but has never identified a suitable supplier. HMP has collected the following data on the cost of the fitting:

$\backslash$table$[[$Materials$,$$$6\mathrm{.}55$