$A$ company selected $4000$ households at random and surveyed them to find out a relationship between income level and the number of television sets in a home. The information so obtained is listed in the following table:
Monthly income (in Rs) $0$ Televisions $1$ Television $2$ Televisions Above $2$ Televisions $< 10000$ $20$ $80$ $10$ $0$ $10000-14999$ $10$ $240$ $60$ $0$ $15000-19999$ $0$ $380$ $120$ $30$ $20000-24999$ $0$ $520$ $370$ $80$ $25000$ and above $0$ $1100$ $760$ $220$
Find the probability of a household earning $Rs. 25000$ and more per month and owning $2$ televisions.
| Monthly income (in Rs) | $0$ Televisions | $1$ Television | $2$ Televisions | Above $2$ Televisions |
| $< 10000$ | $20$ | $80$ | $10$ | $0$ |
| $10000-14999$ | $10$ | $240$ | $60$ | $0$ |
| $15000-19999$ | $0$ | $380$ | $120$ | $30$ |
| $20000-24999$ | $0$ | $520$ | $370$ | $80$ |
| $25000$ and above | $0$ | $1100$ | $760$ | $220$ |
Find the probability of a household earning $Rs. 25000$ and more per month and owning $2$ televisions.
- A$0.109$
- B$0.19$
- C$0.99$
- D$0.59$
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$A$ recent survey found that the ages of workers in a factory is distributed as follows:
Age (in years) $20-29$ $30-39$ $40-49$ $50-59$ $60$ and above Number of workers $38$ $27$ $86$ $46$ $3$
If a person is selected at random,find the probability that the person is under $40$ years.
| Age (in years) | $20-29$ | $30-39$ | $40-49$ | $50-59$ | $60$ and above |
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View Solution$1000$ 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 $128$ $672$ $200$
Compute the probability of a family,chosen at random,having $(1)$ two girls,$(2)$ one girl.
| Number of girls in a family | $0$ | $1$ | $2$ |
| Number of families | $128$ | $672$ | $200$ |
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View Solution$A$ company selected $4000$ households at random and surveyed them to find out a relationship between income level and the number of television sets in a home. The information obtained is listed in the following table:
Monthly income (in Rs) $0$ Television $1$ Television $2$ Televisions Above $2$ Televisions $< 10000$ $20$ $80$ $10$ $0$ $10000-14999$ $10$ $240$ $60$ $0$ $15000-19999$ $0$ $380$ $120$ $30$ $20000-24999$ $0$ $520$ $370$ $80$ $25000$ and above $0$ $1100$ $760$ $220$
Find the probability of a household earning $Rs. 10000 - 14999$ per month and having exactly one television.
| Monthly income (in Rs) | $0$ Television | $1$ Television | $2$ Televisions | Above $2$ Televisions |
| $< 10000$ | $20$ | $80$ | $10$ | $0$ |
| $10000-14999$ | $10$ | $240$ | $60$ | $0$ |
| $15000-19999$ | $0$ | $380$ | $120$ | $30$ |
| $20000-24999$ | $0$ | $520$ | $370$ | $80$ |
| $25000$ and above | $0$ | $1100$ | $760$ | $220$ |
Find the probability of a household earning $Rs. 10000 - 14999$ per month and having exactly one television.
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