A.N(μ,σ2) B.N(0,1) C. D.N(aμ+b,a2σ2)
A.-14 B.-13 C.40 D.41
A.n=4,p=0.6 B.n=6,p=0.4 C.n=8,p=0.3 D.n=24,p=0.1