The state highway patrol wants to evaluate a new rule for vehicles that was put into place to prevent road accidents across all large cities. which measure would be displayed in a graph most appropriately representing this information? a. the rate of decrease in the number of vehicles purchased per year b. the total number of road accidents per year c. the total number of vehicles per person d. the rate of decrease in the number of road accidents per year

(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.)