P and Q are points on the line y = 2 - 4x a) Complete the coordinates of P and Q.
P(0,
Q
,0)

2
b) Plot points P and Qon the graph.
Use the x tool to plot the coordinates,
(1)
-3
310
2
C) Draw the line y = 2 - 4x for values of x
from -2 to 2
(1)
Total marks

(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.)