Bulbs are packed in cartons,each containing $40$ bulbs. Seven hundred cartons were examined for defective bulbs,and the results are given in the following table:
Number of defective bulbs $0$ $1$ $2$ $3$ $4$ $5$ $6$ more than $6$ Frequency $400$ $180$ $48$ $41$ $18$ $8$ $3$ $2$
One carton was selected at random. What is the probability that it has no defective bulb?
| Number of defective bulbs | $0$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | more than $6$ |
| Frequency | $400$ | $180$ | $48$ | $41$ | $18$ | $8$ | $3$ | $2$ |
One carton was selected at random. What is the probability that it has no defective bulb?
- A$\frac{7}{9}$
- B$\frac{5}{7}$
- C$\frac{3}{7}$
- D$\frac{4}{7}$
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Similar Questions
Over the past $200$ working days,the number of defective parts produced by a machine is given in the following table:
Number of defective parts $0$ $1$ $2$ $3$ $4$ $5$ $6$ $7$ $8$ $9$ $10$ $11$ $12$ $13$ Days $50$ $32$ $22$ $18$ $12$ $12$ $10$ $10$ $10$ $8$ $6$ $6$ $2$ $2$
Determine the probability that tomorrow's output will have not more than $5$ defective parts.
| Number of defective parts | $0$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ | $11$ | $12$ | $13$ |
| Days | $50$ | $32$ | $22$ | $18$ | $12$ | $12$ | $10$ | $10$ | $10$ | $8$ | $6$ | $6$ | $2$ | $2$ |
Determine the probability that tomorrow's output will have not more than $5$ defective parts.
Medium
View SolutionIn a survey of $364$ children aged $19-36$ months,it was found that $91$ liked to eat potato chips. If a child is selected at random,the probability that he/she does not like to eat potato chips is:
Medium
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.
Easy
View SolutionTwo dice are thrown simultaneously $500$ times. Each time the sum of two numbers appearing on their tops is noted and recorded as given in the following table:
Sum Frequency $2$ $14$ $3$ $30$ $4$ $42$ $5$ $55$ $6$ $72$ $7$ $75$ $8$ $70$ $9$ $53$ $10$ $46$ $11$ $28$ $12$ $15$
If the dice are thrown once more,what is the probability of getting a sum between $8$ and $12\,?$
| Sum | Frequency |
| $2$ | $14$ |
| $3$ | $30$ |
| $4$ | $42$ |
| $5$ | $55$ |
| $6$ | $72$ |
| $7$ | $75$ |
| $8$ | $70$ |
| $9$ | $53$ |
| $10$ | $46$ |
| $11$ | $28$ |
| $12$ | $15$ |
If the dice are thrown once more,what is the probability of getting a sum between $8$ and $12\,?$
Medium
View SolutionHere is an extract from a mortality table.
Age (in years) Number of persons surviving out of a sample of one million $60$ $16090$ $61$ $11490$ $62$ $8012$ $63$ $5448$ $64$ $3607$ $65$ $2320$
Based on this information,what is the probability of a person aged $60$ dying within a year?
| Age (in years) | Number of persons surviving out of a sample of one million |
| $60$ | $16090$ |
| $61$ | $11490$ |
| $62$ | $8012$ |
| $63$ | $5448$ |
| $64$ | $3607$ |
| $65$ | $2320$ |
Based on this information,what is the probability of a person aged $60$ dying within a year?
Medium
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