Thursday
July 31, 2014

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.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

math - A box contain 12 cell phones of which 4 are defective.all phones look ...
Math - Daphne replaced light bulbs in her mothers store.She had 3/4 of a box of ...
maths - A box contains 12 bulbs with 3 defective ones. If two bulbs are drawn ...
Math - A firm manufactures light bulbs and those that come out of the assembly ...
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 ...
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 -Help - you have a space in your garden for 100 small flowering bulbs. ...
Math - In one hour, a factory packaged 150 boxes of light bulbs. Estimate the ...

Search
Members