Agrocery store was interested in understanding the level of brand loyalty for different products. the store randomly polled 100 customers who had just purchased milk and found that, of the 100 customers, 53 were loyal to one brand of milk. the store then randomly polled 100 customers who had just purchased bath soap and found that, of the 100 customers, 65 were loyal to one brand of soap. the grocery store would like to know if this shows evidence that customers display stronger brand loyalty to soap than milk. what test should be used?