Traffic accidents are the leading cause of death among people aged 15 to 20. In

Question

Traffic accidents are the leading cause of death among people aged 15 to 20. In May 2002, the National Highway Traffic Safety Administration reported that even though only 6.8% of licensed drivers are between 15 and 20 years old, they were involved in 14.3% of all fatal crashes. Insurance companies have long known that teenage boys were high risks, but what about teenage girls? One insurance company found that the driver was a teenage girl in 44 of 388 fatal accidents they investigated.

A.) Is this evidence that the accident rate is lower fr girls than for teens in general?
B.) If you have made an error, what type of error is it and what are the costs of making the error?

(FULL Hypothesis Test)

Must Include

- Conditions aka 10% condition
- Type of Model
- Hypothesis test
- P-Value
- Conclusion !!!

Explanation / Answer

10%: should be more than 3880 fatal accidents random: don't know success/failure condition: 44 > 10 and 344 >10 normal model H0: p = 0.068 HA: p > 0.068 z = (44/388-0.068)/sqrt(0.068*0.932/388) = 3.55 P-value = 0.0002 reject H0 strong evidence that teen girls are more likely to be in a fatal accident than regular drivers

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