A plant manager would like to show that the yield of a woven fabric in his plant does not depend on machine operator or time of day and is consistently high. Four randomly selected operators and three randomly selected hours of the day are chosen for the study. The yield is measured in yards produced per minute. Samples are taken on 3 randomly chosen days. The data follow:(a) Write the appropriate model.(b) Evaluate the variance components for operator and time.(c) Drawconclusions.

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Operator 2 Time 3 9.8 10.1 9.6 10.0 9.7 10.2 9.5 9.8 10.0 9.8 10.3 9.7 10.2 10.1 10.2 9.8 9.7 10.3 10.1 9.9 9.9 9.5 9.8 9.7 10.5 10.4 10.2 10.2 9.9 10.0 3 10.3 10.2 10.1 9.3 9.8 9.7 2.