Multiple Choice Select the best answer for Exercises 20-32, 29. Experiments on learning in animals sometimes measure how long it takes mice to find their way through a maze. The mean time is 18 seconds for one particular maze. A researcher thinks that a loud noise will cause the mice to complete the maze faster. She measures how long each of 10 mice takes with a loud noise as stimulus. The appropriate hypotheses for the significance test are a Ho : p = 18: Hatu # 18 b. Ho : p =18; Ha : u > 18 c. Ho : p