A student uses a model train and tree to show one of the ways that Earth moves. How does Earth move like the train in the picture?
O A. It rolls on a track.
B. It stops in its path.
C. It travels forward and backward.
O D. It moves in a path around another object.

(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.)