Hammermill Premium Inkjet 24 lb. paper has a specified brightness of 106. (a) At α = .005, does this sample of 24 randomly chosen test sheets from a day’s production run show that the mean brightness...

Hammermill Premium Inkjet 24 lb. paper has a specified brightness of 106. (a) At α = .005, does this sample of 24 randomly chosen test sheets from a day’s production run show that the mean brightness exceeds the specification? (b) Does the sample show that σ²
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