Related InterviewSolutions

• The centres for disease control have determined that when a person is given will develop immunity to virus is 0.8 If eight people are given this vaccine find the probability that (1) none will develop immunity (2) exactly four will develop immunity . (3) all will develop immunity ,A. `0.000128`B. 1.28E-5C. 2.56E-5D. 2.56E-6
• The centres for disease control have determined that when a person is given a vaccine, the probability that the person will develop immunity to a virus is 0.8.If eight people are given this vaccine, then the probability that exactly four will develop immunity isA. 0.04587B. 0.4587C. 0.09174D. 0.9174
• For `X ~ B` (n = 10, p = 0.2), P (X=1) =A. `2xx(0.8)^9`B. `2xx(0.8)^8`C. `(0.8)^9`D. `(0.8)^8`
• Given X~B(n,p).IfE(X)=6,and Var (X) = 4.2, find the valye of n.A. 40B. 10C. 20D. 15
• Given X~ B(n,p) . If n = 25 , E(x) = 10, find p and S.D (X)A. `2sqrt6`B. `sqrt6`C. `2sqrt10`D. 6
• Given `X~B(n,p)` if E(X) = 6, Var (X) = 4.2 , find the value of n and p.A. 0.6B. 0.4C. 0.7D. 0.3
• Given X~ B(n,p) . If n = 25 , E(x) = 10, find p and S.D (X)A. 0.4B. 0.6C. 0.3D. 0.7
• Given X ~ B( n, p) if p =0.6 E(X) =6, then the value of Var (X) isA. 24B. 2.4C. 6D. 6.6
• Given X ~ B ( n,p)If p =0 .6 E (X) =6, find n and Var (X)A. 10B. 5C. 8D. 7
• Given X~ B (n,P) If n= 10 and p=0.4 , find E(X) and Var (X) .A. 0.4B. 24C. 4D. 2.4