Question

1500 families with 2 children were selected randomly, and the following data were
recorded :
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Answer 1

Answer:-

Number of girls in a family     2          1          0

Number of families               475     814      211

i) 2/475 =  19/60

ii) 1/814 =  407/750

iii) 0/211 = 211/1500

Hope it helps....    

Answer 2

(i) Number of families with 2 girls = 475

Total number of families = 150

P(E) =(Number of favourable outcomes)/(Total number of event)

=475/1500

=19/60

(ii) Number of families with 1 girl = 814

P(E) = (Number of favourable outcomes)/(Total number of event)

=814/1500

=407/750

(iii) Number of families with no girl = 211

P(E) = (Number of favourable outcomes)/(Total number of event)

=211/1500