In the image, point A marks the center of the circle. Which two lengths must form a ratio of 1:2? A.
A F:AE
B.
BC:EF
C.
EF:AI
D.
AI:EF
E.
AI:AD

(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.)