The use of cellular phones in automobiles has increased dramatically in the last
ID: 3396978 • Letter: T
Question
The use of cellular phones in automobiles has increased dramatically in the last few years. Of concern to traffic experts, as well as manufacturers of cellular phones, is the effect on accident rates. Is someone who is using a cellular phone more likely to be involved in a traffic accident? What is your conclusion from the following sample information? Use the 0.02 significance level. (Round your answers to 3 decimal places.)
Had Accidentin the Last Year Did Not Have an Accident
in the Last Year Uses a cell phone 45 270 Does not use a cell phone 35 280
Explanation / Answer
The use of cellular phones in automobiles has increased dramatically in the last
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