Random misfire code is usually a P0300. Anything in the range of P0301-308 indicates a specific cylinder. The 5.0 is prone to spark plug wire problems. A random misfire can be just about anything, further checking with a scan tool should reveal a clue. There is mode 6 data which can help narrow down which cylinder might be misfiring, but the person viewing the data has to have some understanding of how to interpret the data.
Are you having a problem that prompted you to check the code? Is the CEL on? The code you found could be pending, meaning it is not bad enough to cause a problem, but kinda like an advance warning of potential problem.
