A Psychologist Runs Rats Through a Maze and Records the Total

question 14

Multiple Choice

A psychologist runs rats through a maze and records the total time it takes for them to navigate the course.The run times are normally distributed, and we believe the standard deviation of the run times is 121 sec.Calculate the p-value from a test to see if the mean run time differs from 600 sec if 20 randomly sampled rats have an average run time of 583 sec.

• A) 0.5286
• B) 0.2643
• C) 0.7357
• D) 0.8883

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