An industrial experiment was performed that involved 10 treatments for which a BIBD could only be accomplished in 15 shifts. Write down the model for this design. The responses for the experiment are as follows:

Analyze the data and draw conclusions. Take the level of significance to be 5%. Was it necessary to separate data based on shifts?

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Treatments Blocks I II III IV V VI VII VIII IX X 123456789012345 19.6 16.8 10.6 6.6 18.7 16.7 10.4 10.0 18 14.3 6.8 8.3 18.8 14.4 8.4 6.8 18.6 10.1 8.6 6.6 20.0 14.5 8.2 4.8 18.3 16.7 12.8 6.8 18.3 18.3 16.2 6.3 18.4 12.3 10.1 4.0 16.7 18.0 12.0 6.3 18.3 16.1 6.7 4.6 18.7 12.7 12.6 4.8 18.8 14.3 10.4 8.0 18 16.3 8.8 6.8 18.3 16.3 12.3 6.8