Fabric length: 3 7/8 yd. Cost per yard: $9.25
Total cost (rounded to the nearest cent): ?

A. $27.75
B. $34.96
C. $36.84
D. $35.84

(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.)