An experiment is conducted in which 4 treatments are to be compared in 5 blocks. The following data are generated:(a) Assuming a random effects model, test the hypothesis at the 0.05 level of significance that there is no difference between treatment means.(b) Compute estimates of the treatment and block variancecomponents.

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Block 27 Treatment 12.8 11.7 10.7 10.6 14.2 11.7 11.0 9.9 10.7 9.6 11.8 13.8 15.9 14.7 13.6 4 12.6 15.4 16.5 17.1 123 4