What is the product? (5r − 4)(r2 − 6r + 4) 5r3 − 34r2 + 44r − 16 5r3 − 4r2 + 14r − 16 5r3 − 6r − 16 5r3 + 10r − 16

(b) suppose that consolidated power decides to use a level of significance of α = .05, and suppose a random sample of 100 temperature readings is obtained. if the sample mean of the 100 temperature readings is x⎯⎯ = 60.990, test h0 versus ha and determine whether the power plant should be shut down and the cooling system repaired. perform the hypothesis test by using a critical value and a p-value. assume σ = 5. (round your z to 2 decimal places and p-value to 4 decimal places.)