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Drivers on the Phone More Likely to Be in Accidents?

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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 .05 significance level.

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Excel spreadsheet showing the calculations for this hypothesis test at the 0.05 significance level.

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