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Question 2 (iii)
1500 families with 2 children were selected randomly, and the following data were recorded:
Number of girls in a family210Number of families475814211
Compute the probability of a family, chosen at random, having no girl

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Solution

Total number of families = 475 +814 + 211= 1500
(iii) Number of families having no girl= 211
P3(a randomly chosen family has no girl)=Number families having no girlTotal number of families
P3(a randomly chosen family has no girl)=2111500



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