How do I do a silent install and uninstall with WiX and MSI?

Windows Installer (MSI) uses the following command line arguments to be silent:

Silent install or silent major upgrade:

msiexec.exe /i foo.msi /qn

Silent minor upgrade:

msiexec.exe /i foo.msi REINSTALL=ALL REINSTALLMODE=vomus /qn

Silent uninstall:

msiexec.exe /x foo.msi /qn

Executable path:

C:\Windows\system32\msiexec.exe