Many Linux distributions are intended for home users.
No. Red Hat is a commercial Linux distribution geared toward business use.
mint, ubuntu, debian
There are many distribution of Linux such as Ubuntu Fedora Red Hat Debians Caldera Mandrake etc... but the most common is "Red Hat" as it is easy to use and install and come with comprehensive utilities and application including X-Window Graphic system.
Yes. BackTrack is a Linux distribution that focuses on penetration testing and computer forensics.
Yes.
No, Ubuntu is part of Linux.
Ubuntu is a Linux distribution (as in a specific OS setup with the Linux kernel.)
Yes, you can. It's called dualbooting. I guess with Linux you mean a Linux Distribution like Ubuntu? Check the related link if you want to know how.
Yes.
Scientific Linux is a Linux distribution. It is a free and open source operating system and aims to be as close to the commercial enterprise distribution as possible.
Yes - and No... There is no home edition of Norton for Linux that I know of. However, there is an enterprise edition of Antivirus for Linux.
This depends on the distribution. Some Linux distributions tend to use older versions of software for long term support purposes. Generaly, though, for a modern Linux distribution just about any computer made in the last 10 years works just fine.