I would be very grateful if you could help me:
I am carrying out an experiment.
I have 3 demographic groups (mothers, carers and old people).
I will give them a survey BEFORE to measure their awareness of my product AND also to measure whether they can use my product successfully.
Each of the...
I'm planning a study where I get 3 separate groups of people, make them all do a satisfaction questionnaire, then give each group one different intervention (i.e. 3 different interventions total) and then get everyone to do the same satisfaction questionnaire again after the...