In a post students attending a basketball game 90% of the students say that basketball is better than football is this biased or unbiased

Yes because you are only sampling attendees of the basketball game so they are more likely to prefer it over football.

Your answer would be ahere is how: perimeter is how long all the sides are. in a rectangle, there are two sets of parallel sides. so, to find this, we would to the following.(15x2)+(4x2)30+838if you have questions ask! and mark me brainliest! i really wanna level up : 3