Mathematics, 06.11.2019 20:31 Felici6086
It has been hypothesized that treatment (after casting) of a plastic used in optic lenses will improve wear. four different treatments are to be tested. to determine whether any differences in mean wear exist among treatments, 28 castings from a single formulation of the plastic were made, and seven castings were assigned to each treatment. wear was determined by measuring the increase in "haze" after 200 cycles of abrasion (with better wear indicated by small increases). the data is listed below.
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It has been hypothesized that treatment (after casting) of a plastic used in optic lenses will impro...
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