2. $1000$ families with $2$ children were selected randomly, and the following data were recorded:

Home » 2. families with children were selected randomly, and the following data were recorded:

2. $1000$ families with $2$ children were selected randomly, and the following data were recorded:

2. $1000$ families with $2$ children were selected randomly, and the following data were recorded:

Number of girls in a family	$0$	$1$	$2$
Number of families	$333$	$392$	$275$

Find the probability of a family, having

(iii) no girl

Solution:-

The extent to which an event is likely to occur and measured by the ratio of the favorable cases to the whole number of cases possible, the chance that a given event will occur.

(iii) Number of families that having no girls = $333$

Then, required probability = Number of families that having no girl /total number of families

= $\frac{333}{1000}$

= $\frac{11}{40}$

= $0.275$

i

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