Suppose you sample the salary of two car sales man from two different states, New Yersey and Delaware. Test the hypothesis that the average salesman in NJ is more than the average in Delaware by comparing the calculated z-score to the critical z-score a

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Suppose you sample the salary of two car sales man from two different states, New Yersey and Delaware.  Test the hypothesis that the average salesman  in NJ is more than the average in Delaware by comparing the calculated z-score to the critical z-score at a 0.05 significance level.

 

NJ: sample mean - $52,378, sample size - 40, standard deviation - $6,812

DL: sample mean - $48,773, sample size - 42, standard deviation - $7,514

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