Mathematics, 28.07.2019 14:30 TamB01
Acertain type of stainless steel powder is supposed to have a mean particle diameter of µ=15 µm. a random sample of 87 particles had a mean diameter of 15.2 µm, with a standard deviation of 1.8 µm. a test is made of h0: μ=15 versus h1: μ≠15.
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