A、当n充分大时,近似有X~N p,p(1-p)/n
B、P{X=k}=Cnkp^k(1-p)^(n-k),k=0,1,2,……,n
C、P{X=k/n}=Cnkp^k(1-p)^(n-k),k=0,1,2,……,n
D、P{Xi=k}=Cnkp^k(1-p)^(n-k) ,1≤i≤n
A、当n充分大时,近似有X~N p,p(1-p)/n
B、P{X=k}=Cnkp^k(1-p)^(n-k),k=0,1,2,……,n
C、P{X=k/n}=Cnkp^k(1-p)^(n-k),k=0,1,2,……,n
D、P{Xi=k}=Cnkp^k(1-p)^(n-k) ,1≤i≤n