Shannon is designing a snowman for a winter mural. She wants the head of the snowman to have a radius of 5 inches (5in.), and the midsection of the snowman to have a radius of 7in. How much bigger is the area of the snowman's midsection than the area of its head? In other words, how many more square inches of material will be needed to create the midsection of the snowman compared to the square inches needed to create its head?

(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.)