Emily has two pieces of tread, one 24 feet long and the other 30 feet long. For a sewing project, she needs to cut them up t produce many pieces of tread that are all of the same length, with no tread left over. What is the greatest length in feet that she can make

(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.)