Question

y
prays. Find
1500 families with 2 children were selected randomly, and the following data were
recorded
* ,
Number of girls in a family
2
1
0
Number of families
475
814
211
Compute the probability of a family, chosen at random, having
0 2 girls
(ii) 1 girl
Also check whether the sum of these probabilities is 1.
(iii) No girl​

Answer 1

Answer:

Step-by-step explanation:

(i) Number of families having 2 girls =475

Total families =475+814+211=1500      

P(2 girls) =  

Total families

475

​  

 

=  

1500

475

​  

=  

60

19

​  

 

(ii) P(1 girl)=  

1500

814

​  

=  

750

407

​  

 

(iii) P(No girl) =  

1500

211

​  

 

Sum of all these probabilities  

=  

60

19

​  

+  

750

407

​  

+  

1500

211

​  

 

=  

1500

475+814+211

​  

 

=  

1500

1500

​  

=1

Sum of these probabilities =1

Answer 2

Step-by-step explanation:

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