Generally hosts only provide either only a few versions back, but generally no more than 2 or 3 versions (e.g 3.9.1, 3.9.0) or they only have 1 version available and it is usually the most current version.
If there is a host that offers the ability to install any WordPress version i haven't herd of it before sorry.
The only way i know of to accomplish this task is by manually installing the WordPress version you wish by downloading the version you need from here http://wordpress.org/download/release-archive/
Warning: Installing old versions of WordPress come with inherent security risks, new versions of WordPress are released to fix bugs and security issues that are discovered. Older versions of WordPress and their known security holes are more than likely well known by anyone wanting to do damage to insecure websites, To avoid any security issues you should always use the most current version of WordPress on a live production website website.
Hope that helps :)