1. If R={Rhombuses} and p ={Parallelograms} . Simplify R n P

2. The sets C and D are such that n(C u D) =44
n(C n D) =11 and
n(C)=31.
Find the value n(D)​

(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.)