Question: Hypothesis Test: One Tailed. Sample Means X1-X2>0

Given: Random Sample Sizes of 31.

95% level of confidence, Critical Z-score Alpha = 0.05 (or should be Zcrit.= -1.64)

Set A:

X1= 1,701.61 with a Sample Standard Deviation of = 393.33

X2= 1,897.55 with a Sample Standard Deviation of = 435.31

Calculate:

 Standard Error of two means.

 Z-Score

 Compare two sample population means and determine if the Hypothesis should be accepted or rejected. X1-X2>0.

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