Google Answers: Statistics

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Q: Statistics ( No Answer, 0 Comments )

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Subject: Statistics
Category: Reference, Education and News > Homework Help
Asked by: probing-ga
List Price: $5.00

Posted: 27 Feb 2005 15:57 PST
Expires: 28 Feb 2005 14:11 PST
Question ID: 481994

According to a recent study, a random sample of 15 accountants with no
certification had a mean salary of $49,827.  A sample of 12
accountants with CPA certification had a mean salary of $61,936. 
Assume the standard deviation for both samples is $500 and the
populations are normally distributed.  Test the hypothesis at the 0.05
level that accountants with CPAs have higher salaries.

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