document.write( "Question 755874: Approximately 20% of U.S. residents are left-handed. If 100 residents are selected at random, would it be unusual to find that more than 30% are left-handed? Explain your reasoning and show calculations. \n" ); document.write( "

Algebra.Com's Answer #459877 by reviewermath(1029) $\"\"$ $\"About$

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Q:
\n" ); document.write( "Approximately 20% of U.S. residents are left-handed. If 100 residents are selected at random, would it be unusual to find that more than 30% are left-handed? Explain your reasoning and show calculations.
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\n" ); document.write( "A:
\n" ); document.write( "X~Binomial(100, 0.2)
\n" ); document.write( "P(X > 30) =

= $\"highlight%280.0060593%29\"$
\n" ); document.write( "Since the probability is less than 0.05, then it would be unusual to find that more than 30% are left-handed. \n" ); document.write( "

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