Task: Question Answering
Input (English): Background Paragraph: There is an evolution in tennis training that employs the use of low compression balls and in some cases modified court sizes. Organizations around the world have begun to use lower compression balls and modified court sizes as a way to reach out to younger tennis players interested in tennis. The use of low compression balls and modified court sizes is meant to ease the process into becoming a competitive or amateur tennis player. The low compression balls are colored differently to indicate the level of compression. Young players and beginners are likely to find the game easier to learn because the balls do not bounce as high or travel as fast as "normal" balls. The modified smaller courts make covering the court, or reaching the opponents shot, easier as well. 
Story: Jordan and his brother William are going to a special school for learning tennis. When they arrive the instructor asks each of them what level they believe they are as players. William has attended tournaments in the past so he believes himself to be competitive. Jordan on the other hand is just learning so he says he is an amateur. The instructor then hands each of them a tube of tennis balls. William gets a tube of normal tennis balls. Jordan gets a tube of tennis balls that are colored slightly different and labeled "low compression". They practice side by side and Jordan notices that when he hits his tennis balls they do not bounce as high or as fast as Williams normal tennis balls. He ask William if he can try one of his and the balls bounce much higher and faster. 
Question: Will switching from a low compression tennis ball to a normal one increase or decrease how high it bounces.?
Output (English): increase.