The resturant was trying out a new menu. they asked 25 people if they liked the changes 19 said yes. the resturant had 227 costumers that day. how many people liked the new menu

check the picture below.

well, the angle at the vertex d is clearly not a right-angle, let's check for the one at the vertex f which does look like,   however if it's indeed, that means ef is perpendicular to df, in which case their slopes will be negative reciprocal of each other.

so the negative reciprocal of the slope of ef is 1, however the slope of df is not 1, is 1/2, so nope, they're not perpendicular lines.

boxplot e is the answer