Error in one statement; lists "h=F_0/S_0, as required". Statement should be "h=S_0/F_0", which is what's in the question. Had me confused for a couple of minutes!
You're quite right - sorry for this slip. We'd already picked this up and added it to our Corrections document for ST6. You can find this here (http://www.acted.co.uk/Html/paper_corrections.htm) in case the typo in Assignment X4.7 also affects you.