Math Solutions

(Step-by-Step) You are planning an evaluation of a semester-long alcohol awareness campaign at York University. Previous evaluations indicate that 20% of

Question: You are planning an evaluation of a semester-long alcohol awareness campaign at York University.

  1. Previous evaluations indicate that 20% of the students surveyed will respond "yes" to the question "Did the campaign alter your behavior toward alcohol consumption?" How large a sample of students should you take if you want the width of a 95% confidence interval to be 0.16?
  2. Re-do part (a) without assuming 20% of the students surveyed will respond "yes" to the question.

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