Which table of x- and y-values represents a proportional relationship? (1 point) x 1 2 3 4 y 4 8 9 10 x 1 2 3 4 y 5 6 7 8 x 2 4 6 8 y 1 2 3 4 x 1.5 2 2.5 3 y 3 6 9 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.)