Question

A clinical trial is conducted comparing a new pain reliever for arthritis to a placebo.  Participants are

randomly assigned to receive the new treatment or a placebo and the outcome is pain relief within 30 minutes.  The data are shown below.

Is there a significant difference in the proportions of patients reporting pain relief?  Run the test at a 5% level of significance.

Reject H₀ if Z <  ________  or if Z > ________

alpha= ________

 ⁼ ________

 ⁼ ________

  = ________

  Z   = ________

Based on comparing the computed z to the rejection level z which of the following is (are) true?

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