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Using the 6 steps to hypothesis testing, Conduct a Z test to determine if The dosage...

Using the 6 steps to hypothesis testing, Conduct a Z test to determine if The dosage of Ritalin has an effect on attention span.

  • IV = Ritalin (10mgs vs 20mgs)
  • DV = Attention span (measured in minutes)
  • Given the harmful side effects conduct a Z-test at the p=.01 level.
  • Mean for 10 milligram group = 12.3 minutes, Mean for 20 milligram group =13.3 minutes
  • Standard error of the difference is = .6 minutes
  1. Write out Null and Research Hypotheses
  2. Use the Z test
  3. Significance level is p= .01 Determine the critical cutoff points.
  4. Calculate the Z value.
  5. Make a decision about Null Hypothesis: Reject or Accept
  6. Interpret your results.

Lastly, based on your decisions, which type of error might you be making?

Math   Statistics-And-Probability   
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