$A$ 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 $40$ years or more.
| 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 $40$ years or more.
- A$0.75$
- B$0.375$
- C$0.675$
- D$0.775$
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Similar Questions
$A$ 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) Number of Televisions per household $0, 1, 2, \text{Above } 2$ $< 10000$ $20, 80, 10, 0$ $10000-14999$ $10, 240, 60, 0$ $15000-19999$ $0, 380, 120, 30$ $20000-24999$ $0, 520, 370, 80$ $25000$ and above $0, 1100, 760, 220$
Find the probability of a household not having any television.
| Monthly income (in Rs) | Number of Televisions per household |
| $0, 1, 2, \text{Above } 2$ | |
| $< 10000$ | $20, 80, 10, 0$ |
| $10000-14999$ | $10, 240, 60, 0$ |
| $15000-19999$ | $0, 380, 120, 30$ |
| $20000-24999$ | $0, 520, 370, 80$ |
| $25000$ and above | $0, 1100, 760, 220$ |
Find the probability of a household not having any television.
Easy
View SolutionAs the number of tosses of a coin increases,the ratio of the number of heads to the total number of tosses will be $\frac{1}{2}$. Is it correct? If not,write the correct one.
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View Solution$A$ 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 $60$ but over $39$ years.
| 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 $60$ but over $39$ years.
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View SolutionThe probability of a month of February having $5$ Mondays in a leap year is ............
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View SolutionFind the probability of getting $51$ marks out of $50$ marks.
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