document.write( "Question 899883: An advertising firm claims that the average expenditure for advertising for their customers is at least $12,500 per year. You want to test this claim, so you randomly select 10 of their customers. The results are listed below. At a sig. level of .01 can you reject this claim? Explain.\r
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Algebra.Com's Answer #545637 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "Hi
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document.write( "Ho: p >= 12.500 (claim)
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document.write( "Ha: p <12,500 
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document.write( "Sample:
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document.write( "mean = 12031
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document.write( "s = 1606.595
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document.write( "test stat:: z(12031) = (12031-12500)/[1606.6/sqrt(10)] =  - 499/508.1 = -.9821
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document.write( "p-value = P(z < -.9821) = .1630
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document.write( "Conclusiion: 
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document.write( "Since the p-value is greater than .01, accept claim.
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document.write( "The test results support the claim.\r
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