Homework Help: Statistics

Posted by Yvonne on Wednesday, November 9, 2011 at 1:23pm.

A box contains 12 lights bulbs, of which 4 are defective. All bulbs look alike and have equal chance of being chosen. 3 light bulbs are selected from the box to check the quality.
a. List all the possible outcomes
b. find the probability that all 3 are defective
c. Find the probability that exactly two of the three chhosen are defective
d. Find the probability that a least one of the three are defective.

No one has answered this question yet.

Answer this Question

Related Questions

math - A box contain 12 cell phones of which 4 are defective.all phones look ...
math - A manufacturer of light bulbs knows that 3% of the production of their ...
Math - In a shipment of 1000 light bulbs 1/40 of the bulbds were defective. What...
Math - Daphne replaced light bulbs in her mothers store.She had 3/4 of a box of ...
math - A manufacturer of light bulbs knows that 3% of the production of their ...
algebra 1 - From a shipment of 350 light-bulbs, a sample of 70 was selected at ...
finite math - a quality control engineer at a light bulb plant estimated that 1...
finite math - a quality control engineer at a light bulb plant estimated that 1...
statistics - the life of electric bulbs has a normal distribution with a mean of...
Probability Statistics - a manufacturing plant uses 3000 light bulbs whose ...

For Further Reading

First Name:
School Subject:
Answer: