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N MEAN MEDIAN TRMEAN STDEV SEMEAN FEMALES 33 23.91 20.00 23.38 9.77 1.70 MALES 38 28.87 28.50 28.44 9.67 1.57 A random sample of males

N MEAN MEDIAN TRMEAN STDEV SEMEAN

FEMALES 33 23.91 20.00 23.38 9.77 1.70

MALES 38 28.87 28.50 28.44 9.67 1.57

A random sample of males and females involved in rear end accidents results in the Minitab summary shown here.

a) what's the value of the test statistics (Z score)

b)What's the standard error of the statics between the two means?

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