A factory produces electric bulbs. If 1 out of every 10 bulbs is defective and the factory produces 630 bulbs per day, find the number of defective bulbs produced each day.

Three machinesE1, E2 and E3 in a certain factory producing electric bulbs, produce 50%, 25% and 25% respectively, of the total daily output of electric bulbs. It is known that 4% of the bulbs produced by each of machines E1 and E2 are defective and that 5% of those produced by machine E3are defective. If one bulb is picked up at random from a day’s production, calculate the probability that it is defective.

Three machinesE1, E2 and E3 in a certain factory producing electric bulbs, produce 50%, 25% and 25% respectively, of the total daily output of electric bulbs. It is known that 4% of the bulbs produced by each of machines E1 and E2 are defective and that 5% of those produced by machine E3are defective. If one bulb is picked up at random from a day’s production, calculate the probability that it is defective.

Three machinesE1, E2 and E3 in a certain factory producing electric bulbs, produce 50%, 25% and 25% respectively, of the total daily output of electric bulbs. It is known that 4% of the bulbs produced by each of machines E1 and E2 are defective and that 5% of those produced by machine E3are defective. If one bulb is picked up at random from a days production, calculate the probability that it is defective.

Three machines E 1, E 2, and E 3, in a certain factory producing electric bulbs, produce 50%, 25% and 25 % respectively, of the total daily output of electric bulbs. It is known that 4% of the bulbs produced by each of machines E 1, and E 2, are defective and that 5% of those produced by machine E 3, are defective. If one bulb is picked up at random from a day's production, then calculate the probability that it is defective.

A factory produces bulbs. The probability that any one bulb is defective is 1/50 and they are packed in 10 boxes. From a single box, find the probability that (i) none of the bulbs is defective. (ii) exactly two bulbs are defective. (iii) more than 8 bulbs work properly.

A box contains 16 bulbs, out of which 4 bulbs are defective. Three bulbs are drawn at random from the box. Let X be the number of defective bulbs drawn. Find the mean and variance of X.

A factory produces bulbs. The probability that any one bulb is defective is 1/50 and they are packed in boxes of 10. From a sigle box, find the probability that none of bulb is defective.

A factory produces bulbs. The probability that any one bulb is defective is 1/50 and they are packed in boxes of 10. From a sigle box, find the probability that exactly two bulbs are defective.

A factory produces bulbs. The probability that any one bulb is defective is 1/50 and they are packed in boxes of 10. From a single box, find the probability that none of the bulbs is defective.

A factory produces bulbs. The probability that any one bulb is defective is 1/50 and they are packed in boxes of 10. From a single box, find the probability that exactly two bulbs are defective.