MATH 2233 Lecture Notes - Lecture 16: Prq, Random Variable
29 Nov 2018
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Distribution [ xnnb cr , p ) ] Success sequence of identical trials is performed independant trials. In a binomial experiment , number trials of. " } gnb trip) r ftp. 62-rltp ) p p number of. Example 1: in a large population of mice, 20% are infected with a certain virus. A biologist requires a sample of 4 infected mice for research. infected number mice total of. 0. 8 (a) find the probability she will have to sample at least 2 non-infected mice before she acquires. 0. 00672=0. 99328 (b) find the probability she will have to sample at least 5 mice before she acquires 4 infected ones. 0. 24=0. 9984 (c) find the expected number of non-infected mice that must be sampled in order to obtain the four infected mice. 4%083=16 (d) find the expected number of mice that must be sampled in order to obtain the four infected mice. fun.
