1. Researcher administers a drug to a single patient and uses a hypothesis test to evaluate the effect of the drug. Researcher calculated a z = +2.77 for the patient (Step 3). Assuming the researcher is using a two-tailed test, what decision should the researcher make?(Hint: find critical regions for significance levels.)
   1. Researcher should reject H₀ with 0.05 significance level, but not with 0.01 significance level.
   2. Researcher should reject H₀ with either 0.05 or 0.01 significance level.
   3. Researcher should fail to reject H₀ with either 0.05 or 0.01 significance level.
   4. Cannot answer without additional information.