Teen deaths. Traffic accidents are the leading causeof death among people aged 15 to 20. In May 2002,the National Highway Traffic Safety Administrationreported that even though only 6.8% of licensed driversare between 15 and 20 years old, they were involved in14.3% of all fatal crashes. Insurance companies havelong known that teenage boys were high risks, but whatabout teenage girls? One insurance company foundthat the driver was a teenage girl in 44 of the 388 fatalaccidents they investigated. Is this strong evidencethat the accident rate is lower for girls than for teensin general?a) Test an appropriate hypothesis and state yourconclusion.b) Explain what your P-value means in this context.

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Types of Bias

Statistics is the study of data collection, organization, analysis, interpretation, and presentation. Statistical bias is a characteristic of a statistical technique or its findings in which the expected value deviates from the actual root quantitative parameter being estimated. According to the actual definition of bias, it refers to the tendency of a statistic to overestimate or underestimate a parameter.