Posted by **Amber** on Friday, May 11, 2012 at 8:22pm.

A research center claims that 50% of people believe that drivers should be allowed to use cellular phones with hands free devices while driving. In a random sample of 150 U.S. adults 58% say that drivers should be allowed to use cellular phones with hands free devices while driving. At a=0.01, is there enough evidence to reject the centers claim?

State null, alternative, identify claim

Fine critical and critical regions

Compute test

make decision.

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