Recently I have been covering hypothesis tests with both my Year 12 and Year 13 further maths groups and I noticed differing wordings in exam mark schemes (Edexcel S2).
I’ve always taught that you cannot say “we accept \(H_0\)” as you can’t prove that \(H_0\) is correct, and that you should say something like “There is insufficient evidence to reject \(H_0\)“. However, as the example below from January 2013 shows they seem to be happy with you saying “accept \(H_0\)“:
But strangely they don’t always use this language:
I’m interested – how do you teach it?