NCERT Solutions Class 9 Mathematics Solutions for Probability - Exercise 15.1 in Chapter 15 - Probability
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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 1 girl
Also, check whether the sum of these probabilities is 1.
Probability denotes the possibility of something happening. It's a field of mathematics that studies the probability of a random event occurring. From 0 to 1, the value is expressed. Probability is a mathematical concept that predicts how likely occurrences are to occur. The definition of probability is the degree to which something is likely to occur.
ANSWER:
Numbers of families having 1 girls = 814
Probability = Numbers of families having 1 girls/Total numbers of families
=\frac{814}{1500}
=\frac{407}{750}
Yes, the sum of these probabilities is 1.
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