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1500 families with 2 children were selected randomly, and the following data were recorded: Compute the probability of a family, chosen at random, having No girl

Also, check whether the sum of these probabilities is 1. Looking to do well in your science exam ? Learn from an expert tutor. Book a free class!

Total numbers of families = 1500

Numbers of families having 2 girls = 211

Probability = Numbers of families having 0 girls/Total numbers of families

=\frac{211}{1500}

Sum of the probability = \frac{19}{60}+\frac{407}{750}+\frac{211}{1500}

=\frac{407+814+211}{1500}

=\frac{1500}{1500}

=1

Yes, the sum of these probabilities is 1.

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