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प्रश्न
1800 families with 2 children were selected randomly and the following data were recorded:
| No. of girls in a family | 2 | 1 | 0 |
| No. of families | 700 | 850 | 250 |
Computer the probability of a family chosen at random having: No girls.
उत्तर
Total number of families n(S) = 1800.
Event = {No girl}
n(E) = 250
P(E) = ?
P(E) = `"n(E)"/"n(S)" = 250/1800 = 5/36`.
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1800 families with 2 children were selected randomly and the following data were recorded:
| No. of girls in a family | 2 | 1 | 0 |
| No. of families | 700 | 850 | 250 |
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