<PRE><B>Question 841283</B>
 Conduct a test to determine whether or not the population proportion of voters in favor of proposal A is greater than 50%. In a random sample of 200 voters, 140 said that they were in favor of this proposal. Compute the test statistic.
Please provide steps to arrive at the answer.
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Ho: p &lt;= 0.5
Ha: p &gt; 0.5 
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test proportion: 140/200 = 0.7
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test stat: z(0.7) = (0.7-0.5)/sqrt[0.5*0.5/200] = 5.66
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Conclusion: Since the test stat is in the reject interval,
reject Ho.
Conclusion: The test supports the conjecture that the proportion
is greater than 0.5.
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Cheers,
Stan H.
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