EXHIBIT 1 Dangerous Training? Crash Test Title: Motorcycle Training Does Not Reduce Crash Risk, Study Says Cheryl Jensen Author: Source: New York Times, April 5, 2010, http://wheels.blogs.nytimes. com/2010/04/05/motorcycle-training-does-not-reduce- crash-risk-study-says/ Consider the following statements from a recent New York Times article discussing a recent study by the Highway Loss Data Institute regarding the effectiveness of training courses in improving motorcycle safety, and consider the questions below. The article says: ANAS s What is not so certain are the safety benefits of mandatory training programs for young drivers in some states. The study compared insurance claims in four states that require riders under 21 to take courses with states that do not. The study noted a 10% increase in crashes in states that required the courses." Questions 1. Define the parameters of interest and state the null and alternative hypothesis. But that finding wasn't "statistically significant," Ms. McCartt [senior vice president for research at the Insurance Institute] said. That means the increase might or might not be real, although the institute found it worth noting. "It is important that it was going in the opposite direction of what people would expect," she said. 2. What do we know about the p-value compared to alpha? Which Type of error could we be making?