document.write( "Question 451339: 3. (3 points) Using the 5-step hypothesis testing model test to see if average income of a group is greater than 35,000. Assume ratio level data. Use an alpha of 5%. When data is collected the sample mean is 36,500. The population standard deviation is known to be 5,000 (so a z test can be used).
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Using the 5-step hypothesis testing model test to see if average income of a group is greater than 35,000. Assume ratio level data. Use an alpha of 5%. When data is collected the sample mean is 36,500. The population standard deviation is known to be 5,000 (so a z test can be used).
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\n" ); document.write( "Ho: u <= 35000
\n" ); document.write( "Ha: u > 35000 (claim)
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\n" ); document.write( "x-bar = 36500
\n" ); document.write( "test stat: z(36500) = (36500-35000)/5000 = 0.3
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\n" ); document.write( "p-value = P(z > 0.3) = 0.3821
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\n" ); document.write( "Since the p-value is greater than 5%, fail to reject Ho.
\n" ); document.write( "The test results do not support the claim.
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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