It is known that a box of 200 electric bulbs contains 16 defective pieces. One bulb is taken out at random. What is the probability that it is (i) defective (ii) not defective ?

A lot of 20 bulbs contain 4 defective ones. One bulb is drawn at random from the lot. What is the probability that this bulb is defective ?

(i) A lot of20 bulbs sontains 4 defective ones. One bulb is drawn at random from the lot. What is the probability that this bulb is defective? (ii) Suppose the bulb drawn in (i) is not defective and is not replaced. Now one bulb is drawn at random from the rest. What is the probability that this bulb is not defective?

Suppose the bulb drawn in (i) is not dective and is not replaced . Now one bulb is drawn at random from the rest. What is the probability that this bulb is not defective?

A box contains 100 bulbs, out of which 10 are defective. A sample of 5 bulbs is drawn. The probability that none is defective is

There are 5% defective items in a large bulk of items. What is the probability that a sample of 10 items will include not more than one defective item?

A bag contains 3 red balls and 5 black balls . A ball is drawn at random from the bas. What is the probability that the ball drawn is (i) red ? (ii) not red ?

A box contains 100 bulbs, out of which 10 are defective. A sample of 5 bubls is drawn. The probability that none is defective is

A box contains 5 red marbles, 8 white marbles and 4 green marbles. One marble is taken out of the box at random. What s the probability that the marble taken out will be (i) red? (ii) white? (iii) not green?

14 defective bulbs are accidentally mixed with 98 good ones. It is not possible to just look at the bulb and tell whether it is defective or not. One bulb is taken out at random from this lot. Determine the probability that the bulb taken out is a good one.

From a lot of 30 bulbs which include 6 detective, a sample of 4 balls is drawn at random with replacement. Find the probability distribution of the number of defective bulbs.