1500 families with 2 children were delected randomly and the following data were recorded:
No. of girls in a family : | 0 | 1 | 2 |
No. of families : | 211 | 814 | 475 |
If a family is chosen at random, compute the probability that it has:
(i) No girl
(ii) 1 girl
(iii) 2 girls
(iv) At most one girl
(v) More girls than boys.
Given,
Total number of families = 211+814+475 = 1500
(i) Number of families having no girl = 211
Required probability = 
= 
(ii) Number of families having one girl = 
= 
= 0.5426
(iii) Number of families having 2 girls = 
=
0.3166
(iv) Number of families having at most one girl = 
= 
(v) Number of families having more girls thanboys= 
=
4