Homework Help: math

Posted by Tim on Thursday, November 1, 2012 at 8:29pm.

If half the batch of 6,000 vials are contaminated, what is the probability of finding no contaminated vials if only two vials are selected from the total amount produced?

math - MathGuru, Friday, November 2, 2012 at 6:03pm
Use the binomial distribution.

If you calculate by hand, here is a formula:

P(x) = (nCx)(p^x)[q^(n-x)]

x = 0
n = 2
p = .5
q = 1 - p = .5

Substitute into the formula and calculate.

I hope this will help.

Answer this Question

Related Questions

Math - A perfume company wants to dispense 57.3 quarts of a new fragrance into ...
chemistry - this is a question for a lab experiment...in the lab we got 2 empty ...
statistics 3 - Exercise #4 Quality control problem: According to U.S. News &...
chemistry - a sample of indium chloride is known to be contaminated with sodium ...
Algebra - How do I set this up to solve? In 2004, the Diabetic Express charged $...
Chem - A water sample is suspected to be contaminated by iron (III) ions. How ...
Logic - Situation 1: You have eight billiard balls. One of them is "...
Chemistry II - A storage tank containing 1.6x10^4 Liters of water is found to be...
pharmacy tehnician - how are amber vials named
chemistry - Naturally occurring iodine has an atomic mass of 126.9045. A 12.3849...

For Further Reading

First Name:
School Subject:
Answer: