document.write( "Question 168033: A sample of 100 one-dollar bills from the Subway cash register revealed that 16 had something written on them besides the normal printing (e.g., “Bob ﾀ Mary”). (a) At α = .05, is this sample evidence consistent with the hypothesis that 10 percent or fewer of all dollar bills have anything written on them besides the normal printing? (a) At α = .05, is this sample evidence consistent with the hypothesis that 10 percent or fewer of all dollar bills have anything written on them besides the normal printing? \n" ); document.write( "
Algebra.Com's Answer #123850 by stanbon(75887)\"\" \"About 
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A sample of 100 one-dollar bills from the Subway cash register revealed that 16 had something written on them besides the normal printing (e.g., “Bob ﾀ Mary”). (a) At α = .05, is this sample evidence consistent with the hypothesis that 10 percent or fewer of all dollar bills have anything written on them besides the normal printing?
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\n" ); document.write( "Ho: p = 0.10
\n" ); document.write( "Ha: p is not 0.10
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\n" ); document.write( "n = 100; p-hat = 16/100 = 0.16; alpha = 5%;
\n" ); document.write( "Critical values for 2-tail z-test: +/-1.96
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\n" ); document.write( "Test Statistic:
\n" ); document.write( "z(0.16) = (0.16-0.10)/sqrt[0.1*0.9/100] = 0.16/[0.0018] = 5.333..
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\n" ); document.write( "Conclusion: Since the test statistic is in the reject interval,
\n" ); document.write( "reject Ho.
\n" ); document.write( "Conclude that p not not = 0.10
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H. \n" ); document.write( "
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