Historically, the speed of movement over land for a hurricane has a mean of 10.8 mph and a standard deviation of 4.2 mph. A hurricane researcher believes that these large storms are slowing down. He takes a random sample of 31 hurricanes from recent years. The mean speed for those storms is 9.5 mph. The data yield a p-value of 0.017. Assume a 0.05 level of significance. What type of error (Type I or Type II) may have been committed? Explain your answer.

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