Suppose that 90% of people are right- handed. What is the probability that atmost 6 of a random sample of 10 people are right- handed?

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?

In a town of 8000 people, 1300 are over 50 years and 3000 are females. It is known that 30% of the females are over 50 years. What is the probability that a chosen individual from the town is either a female or over 50 years ?

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 items?

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?

In a certain population, 10% of the people are rich, 5% are famous, and 3% are rich and famous. Then find the probability that a person picked at random from the population is either famous or rich but not both.

Goods are sold is 3 retail outlets,X Y,Z in the ratio 2:3:5. If 90% of the item from X 80% of item from Y and 95% of item from Z are in good condition (i)what is the probability that an item chosen at random is in good condition.(ii)If a selected item is not in good condition what is the probability that it is from outlet Y?

In a box containing 10 bulbs, 2 are defective. What is the probability that among 5 bulbs chosen at random , none is defective ?

State Right hand thumb rule.

20% of the bolts produced in a factory are found to be defective. Find the probability that in a sample of 10 bolts chosen at random, exactly 2 will be defective using binomial distribution.