A baseball league is testing bats to see which brand improves the distance hit the most. The players are randomly assigned to either Sample 1 or Sample 2. Half of the 80 players in the league are assigned to Sample 1, which uses the Acme brand of bat. The other half of the students are assigned to the Beta brand of bat. The results are below: Improved Distance Hit Distance Hit Unchanged or Decreased Acme Brand 15 25 Beta Brand 8 32 Let represent the percentage of Sample 1 players that improve the distance hit and represents the percentage of Sample 2 players that improve the distance hit. State the null hypothesis for this