It is known that 10% of certain articles manufactured are defective. What is the probability that in a random sample of 12 such articles, 9 are defective?

If 2% of pipes manufactured by a company are defective, the probability that in a sample of 1000 pipes exactly 6 pipes are defective is

In a box containing 100 bulbs, 10 are defective. What is the probability that out of a sample of 5 bulbs, (i) none is defective and (ii) exactly 2 are defective ?

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?

If ten percent of the tools produced in a factory turnout to be defective then the probability that in a sample of 10 tools chosen at random; exactly two will be defective by using poisson distribution is

The bulbs produced in a factory are supposed to contain 5% defective bulbs . What is the probability that a sample of 10 bulbs will contain not more than 2 defective bulbs?

A carton contains 20 bulbs ,5 of which are defective. The probability that,if a sample of 3 bulbs in chosen at random from the carton, 2 will be defective, is

A box contains 10 good articles and 6 defective articles.One item is drawn at random.The probability that it is either good or has a defect,is