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Answer:1.39 ; 2.02 ; 2.90Step-by-step explanation:From the F - distribution calculatorF0.25, 8, 2 ;u = 8 ; v = 25 ; cumulative probability = 1 - 0.25 = 0.75F value = 1.39F0.10,12,15 :u = 12 ; v = 15 ; cumulative probability = 1 - 0.10 = 0.90F value = 2.02F0.01,12,6u = 12 ; v = 6 ; cumulative probability = 1 - 0.01 = 0.90F value = 2.90...