单项选择题
A.1B.2C.3D.4E.5
A.λB.1/λC.1D.1/λ2E.λ2
A.600B.632C.658D.670E.700
A.1.28B.1.30C.1.34D.1.36E.1.38
A.17B.18C.19D.20E.21
A.2956B.2970C.29140D.29200E.21134
A.指数分布B.贝塔分布,参数(a ,b )C.贝塔分布,参数为(∑X i +a ,mn-∑X i +b )D.泊松分布E.负二项分布
A.0.5241B.0.5133C.0.6D.0.5134E.0.5243
A.0.539,0.341,0.120B.0.439,0.441,0.120C.0.541,0.339,0.120D.0.341,0.539,0.120E.0.539,0.120,0.341
A.8.5B.9.0C.9.5D.10.0E.10.5
A.156B.206C.256D.306E.356