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A researcher claims that the mean monthly household income for of Precinct 1 is less than...

A researcher claims that the mean monthly household income for of Precinct 1 is less than
Precinct 2 of a particular large city. The following statistics were obtained.

Precinct Mean
(RM)

Standard Deviation
(RM) Sample Size
1 4825 1750 17
2 5750 1950 15


Assume normal distributions and equal variances. Test at the 5% significance level.

Math   Statistics-And-Probability   
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