Choose an appropriate statistics test that to use for the following studies:

a) An experiment where researchers compared the number of questions on a reasoning test answered correctly by 5 and 10 year-olds (unrelated data). (Assume all questions are of equal difficulty, so interval data.)
b) An experiment where researchers compared the same people's scores on a questionnaire designed to measure attitudes towards vegetarianism, before and after they had watch a video showing conditions at an abattoir. Scores were provided in the form of a rating scale.
c) A correlational study to investigate whether the ratings of for 'Eastenders' by married couples were similar.
d) An experiment where researchers hypothesised that the same participants would recall more words at the beginning and end of a list than in the middle of the list. (All words are same length and assumed to be equally easy to recall, so interval data.)
e) A correlational study to see whether the number of Christmas cards written by people was related to the time (interval data) they took shopping for Christmas presents.
f) Researchers investigated whether males or females (category data, unrelated) would be more likely to do their family's washing or the gardening.
g) Researchers wanted to look at the relationship between the number of visits to A&E departments in the last 12 months and the scores on a loneliness rating scale.