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A test ofHo :12=0 . vs.Ha :120 was conducted using two independent samples.The results showed: Sample #1:Sample mean = 150, sample standard deviation =70, sample

A test ofHo :12=0 . vs.Ha :120 was conducted using two independent samples.The results showed:

  • Sample #1:Sample mean = 150, sample standard deviation =70, sample size = 35.
  • Sample #2:Sample mean = 142, sample standard deviation =90, sample size = 45.

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