Which of the following is an example of the associative property of multiplication? a. 7 (6 x 5) = (7 x 6) x (7 x 5) b ( 69) x 2 = 6 x (9 x 2) c 10 x 8 = 8 x 10. d 1x 7 = 7​

(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.)