Homework Help: stastics

Posted by robyn on Saturday, July 25, 2009 at 6:22pm.

Imagine that you have 10 CDs and 10 envelopes on a table before you; each CD and each envelope are labelled with a number such as 7 or 10. If you randomly put the CDs into the envelopes provided, what is the probability of matching only one CD into the wrong envelope?

stastics - economyst, Sunday, July 26, 2009 at 8:51pm
It took me a few minutes to realize this is a trick question. It is impossible to have exactly one CD in the wrong envelope. If a CD is in the wrong envelope, then there must be at least one other CD in a wrong envelope. So, the probability is zero.

Answer this Question

Related Questions

5th grade math - mrs jones wrote 8 personal letters and addressed 8 envelopes to...
Chemistry - Calculate the value of the solubility product (Ksp) for CdS given ...
Math - Find the number of each kind of object in the collection Miranda has 24 ...
Statistics and Probability - A computer supply house receives a large shipment ...
Math - Tell whose CD collection has the greater ratio of rock CDs to total CDs. ...
Probability/Statistics - A secretary addresses 50 different letters and ...
Math - How do I set this up and solve it? Tom has a collection of 30 CDs and ...
chemistry - Calculate the following quantities. (See the periodic table.) (a) ...
maths - you are at the music store looking for CDs. the store has CDs for $10 ...
Math-Data Management - In a random Sample of Canadians 30% have Beeburr CD's...

For Further Reading

First Name:
School Subject:
Answer: