1. ## Covariance

I tried using the formula:
$cov[V,W] = E[VW] - E[V]E[W]$

I assumed this takes on a binomial distribution with
$E[X] = np$
Hence for E[V] and E[W] I obtained 0.55n and 0.45n respectively. After this I am stuck on this question.

Any hints would be greatly appreciated!
Linda

2. ## Re: Covariance

Hi lindah, the link to your question is broken on my browser.

3. ## Re: Covariance

Hi pickslides,

On my browser it is embedded in the post. Here is the text link for the image.

ImageShack&#174; - Online Photo and Video Hosting

Thank you for letting me know