I need your help on how best to test the following hypotheses in R. Each observation in my data has
RaterGender, along with their ratings on 5-point scale for four different attributes (
P4) of product (
ProductID).There are multiple observations for each rater and same product may have ratings from multiple observers.
How do I statistically model in R to test the following hypothesis:
H1: Men are more likely have higher ratings on
H2: Women are more likely to have higher ratings on
How should I control for the random effects of raters and products?