As a teaching tool, the teacher numbered the floor tiles consecutively from 12 to 12. Starting on the tile labeled with number 12, Jack took 12 steps forward. -12 + 12 =
At that point, Jack stood on the tile that showed what number?
А
0
B
6
C
12
D
24

(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.)