Question 4 was two binomial approx, one poisson one normal right? iirc it was a normally distributed function so type 1 error probability is the significance level and type 2 was given, then you modelled it as a binomial function (it either has an error or doesnt) and do the standard for approximating
that was a cute context from ocr on question 2 - dead bunnies along a road?
also is anyone feeling confident in their 8ii answer? im not sure mine is right but it was the only thing i could think of (I'll type it up once im not on mobile)