Question

ln a survey 400 families with two children were selected at random and the following data was recorded.
No. of girls 2 1 0
No. of females 50 100 250

Answer 1

Answer:

Step-by-step explanation:

1•}2 girls :--

Probability=No. of favourable outcome/Total no. of outcome

=50/400=1/8

2•} 1 girl :--

Probability=No. of favourable outcome/Total no. of outcome

=100/400=1/4

3•} No girl :--

Probability=No. of favourable outcome/Total no. of outcome

=250/400=5/8

Hence, probability of getting :--

1•} 2 girls = 1/8

2•} 1 girl = 1/4

3•} no girl = 5/8

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Answer 2

Answer:

1} = 2 girls :

probability=no . of favorable outcome / Total no. of outcome

=50/400=1/8

2} =1 girl

probability=no of favorable outcome/ total no. of outcome

=100/400=1/4

3} = no girl

probability=no.of favorable outcome/total no. of outcome

=250/400=5/8

Hence, probability of getting:

1} 2 girls = 1/8

2}1 girl = 1/4

3}no girls= 5/8

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