Please follow the directions on the attached picture for question #8 and show work step by step

In a graph with several intervals o data how does a constant interval appear? what type of scenario produces a constant interval?

This is about circle theorems. someone asap : (

(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.)