What is the probability of getting at least one defective item if 3 items are drawn at random from a lot containing 6 items of which two are defective items?

Answer: (Option C) – 0.80 is the correct answer. Given Data: Lot containing 6 items.

What is the formula of probability class 10?

Of Probability: If n represents the total number of equally likely, mutually exclusive and exhaustive outcomes of an experiment and m of them are favourable to the happening of the event A, then the probability of happening of the event A is given by P(A) = m/n. (2) P(A) + P( \bar {A} ) = 1, Where \bar {A} = Not A .

What is the probability that an item will not be defective?

It is given that there is a 10\% probability that an item is defective, thus there is a 90\% chance an item will not be defective. If we pick 5 items at random, the probability that they are not defective is:

What percentage of toys are made from defective parts?

From the total production, 50\% are produced by machine A, 30\% by machine B, and 20\% by machine C. Past statistics show that 4\% of the toys produced by machine A are defective, 2\% produced by machine B are defective, and 4\% of the toys produced by machine C are defective.

What is the probability of a screw to be defective?

A machine manufacturing screws is known to produce 5\% defective screws. In a random sample of 15 screws, what is the probability that there are exactly three defective screws? We want exactly three screws to be defective. Each of these screws have only 5\% probability of being defective.

What is the probability that a machine will break from a?

If it gets all its machine pieces from B, which is perfectly possible from the given numbers, then the probability the thing comes from A and is broken is 0. But it also possible to arrange the buying pattern so that a non-zero proportion is bought from A, and there is a non-zero probability the machine piece is broken and comes from A.