In a scalene triangle , the perimeter is 33, and the length of one side is 15, and the difference between the two other sides is 4 , then what is the length of the shortest side?
A. 15
B. 11
C. 9
D. 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.)