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 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 box containing 100 bulbs, 10 are defective. What is the probability that out of a sample of 5 bulbs, exactly 2 are defective?

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

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 box containing 100 bulbs, 10 are defective. The probability that out of a sample of 5 bulbs none is defective is :

In a school, there are 1000 students, out of which 430 are girls. It is known that out of 430, 10% of the girls study in class XII. What is the probability that a student chosen randomly studies in Class XII given that the chosen student is a girl?