Which shows one way to determine the factors of X3 – 12x2 – 2x + 24 by grouping? O x(x2 - 12) + 2(x2 - 12)
x(x2 - 12) - 2(x2 - 12)
x²(x - 12) + 2(x - 12)
O x²(x - 12) – 2(x - 12)

(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.)