Well done on passing it.
"over prepared on a grand scale"

That statement reminds me of my college days when I prepared a LOT and the exam was dead easy!
There is a high probablility that you can pass by making "educated guesses" (which is what I thought as well). But I recommend spending time on commiting some things to memory rather than regretting it later. Spending about 2 hours doing it is well worth it people. Eventhough the questions are "mickey mouse" for some of us.
I spoke to one of the test organisers there and told her about how many stats there were. About 8-9. She said on the contrary, the last batch expected more stats in the test! So the questions are chosen randomly for all candidates so I think all of us will have a slightly different opinion on how much preparation should be done.
My other half still needs to sit the test and I will make sure we are "over prepared" to be 100% sure. Anyway, thats my two pence worth on it
Sy.