Question Description
The amount of shaft wear (.0001 in.) after a fixed mileage was determined for each of n = 8 internal combustion engines having a copper lead as a bearing material, resulting in and s = 1.25. Assuming that the distribution of shaft wear is normal with mean μ, use the appropriate test at level .05 to test H0 :
μ = 3.50 versus H
α :
μ
“>> 3.50. Please state any assumption you
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