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Mathematics, 31.03.2020 01:36, juniieb
The thickness of a plastic film (in mils) on a substrate material is thought to be influenced by the temperature at which the coating is applied. A completely randomized experiment is carried out. Eleven substrates are coated at 125F, resulting in a sample mean coating thickness of and a sample standard deviation of s1 5.08. Another 13 substrates are coated at 150F, for which and s2 20.15 are observed. It was originally suspected that raising the process temperature would reduce mean coating thickness. Do the data support this claim
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The thickness of a plastic film (in mils) on a substrate material is thought to be influenced by the...
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