A textile company weaves a certain fabric on a large
Chapter , Problem 8.38(choose chapter or problem)
A textile company weaves a certain fabric on a large number of looms. The managers would like the looms to be homogeneous so that their fabric is of uniform strength. It is suspected that there may be significant variation in strength among looms. Consider the following data for 4 randomly selected looms. Each observation is a determination of strength of the fabric in pounds per square inch. Loom 1234 99 97 94 93 97 96 95 94 97 92 90 90 96 98 92 92 (a) Write a model for the experiment. (b) Does the loom variance component differ signifi- cantly from zero? (c) Comment on the managers suspicion.
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