Without more information, it is impossible to determine whether the shopper preferred the color red or blue. The question only states that one out of the 50 shoppers surveyed preferred either red or blue, but does not give any indication of which color they preferred.
To find out the number of shoppers who preferred the color red or blue, we need to know the number of shoppers who preferred each color. The given information states that there were 50 shoppers surveyed, but it does not specify the breakdown of how many preferred red or blue.
