a research center claims that almost 75 of us adults think that driver
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A research center claims that almost 75% of U.S. adults think that drivers are safer using hands-free cell phones instead of using hand-held cell phones. In a random sample of
150 U.S. adults, 77% think that drivers are safer using hands-free cell phones instead of hand-held ccll phones. At a - 0.05, is there enough evidence to reject the center's claim?