That was definitely for one semester at Michigan. They aren't real clear about that on their website! Room and board for a double, full year, is around $9000.
I've been making myself well aware of these things as my daughter is starting high school and I'm totally panicking. I hope she keeps that 4.0 going through high school. She has high aspirations, a dad who thinks kids should pay for their own college and a mom who would love to pay but doesn't have that kinda money to spare. She's got to get some good scholarships. Additionally, many of the student loan companies have stopped loaning money to students in this state because our economy is so crappy.
Exact tuition rates by major for Michigan:
http://www.umich.edu/~regoff/tuition/full.html
They do say "full term" which would be fall or winter vs. half terms (spring/summer)
ETA: Our other 'flagship' school, Michigan State, is a bit more affordable at about $4000 a term.