In: Statistics and Probability
Data about salaries showed that staff nurses in Tampa earn less
than staff nurses in Dallas (The Tampa Tribune, Jan 15, 2007). You
are a manager at a Tampa hospital and want to test the claim of the
Tribune. You wish to test the claim at a significance level of
α=0.001 So you conduct a follow up survey of 26 staff nurses in
Tampa and 29 staff nurses in Dallas. You find that the sample from
Tampa showed an average salary of $56900 with a standard deviation
of 5600, and the sample from Dallas showed an average salary of
$57700 with a standard deviation of 5850.
(Assume both populations are normally distributed, but you do not
know the standard deviations for either. Also, you have no reason
to believe the variances of the two populations are equal.)
Fail to reject H0
As such, the final conclusion is that...
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