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A research center claims that less than 70% of U.S. adults think that drivers are safer...

A research center claims that less than 70% 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 50 U.S. adults, 60% think that drivers are safer using hands-free cell phones instead of hand-held cell phones. Assume you wish to test is there enough evidence to reject the center’s claim with alpha = 0.10. Compute the test statistics.

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